If you've been a Download Squad reader for a while, you've probably heard about the 3-D molecular puzzle game, Minim. I reviewed it back in May, and Jason reviewed it again in July (oops!). However, I've got my hands on the iPhone version now, and it's worlds better than the Flash one we played before.

The object of Minim is to match up various numbered molecules until you clear the board. When you combine two of the same number, they form a single molecule that's one number greater. Eventually, you'll wind up with just one left, and you've won the level. The thing is, Minim is a lot more fun when you can use the iPhone's gestures to rotate the game board to see what you're working with. Using the mouse in the web version was fine, but the sense of manipulating the puzzle with your fingers adds an extra element of awesome. Check out the trailer after the jump to see how it works.

Minim isn't fast-paced (although you do get time bonuses for quickly solving puzzles), so it's ideal for mobile play on the bus, in the subway, or at your desk. It's cool, we won't tell your boss. The game comes with 50 basic levels, and there appear to be another 40 mystery levels, if you make it that far. For 2 bucks, you're getting your money's worth if you're a puzzle fan.

John Haller is pretty well-known in software circles - he's the guy behind PoartableApps.com. What you may not have known is that he's a big Billy Mays fan. And like a lot of Billy Mays fans, John was a little misty when Billy shuffled off this mortal coil earlier this year.

What better way for a coder to commemorate a fallen icon than with an awesome app? Enter BILLY MAYS CAPS LOCK!

While it won't make your whites whiter or fix the broken handle of your coffee mug, it is one of the greatest remedies I've ever found for computer-induced boredom. Need a quick, random jolt to break you out of your ennui? Hit your caps lock key, and virtual Billy Mays will chime in with one of his trademark catch phrases.

It's probably worth noting that the app does override your caps lock's real functionality, but only overexcited douchebags on Twitter use it anyway, right? Haller does build in shift + caps lock as a workaround in case you do need to enable cruise control for awesome.

HERE'S HOW TO ORDER:

Sorry, I got caught up in the moment there. It's a free download and is available as an installer or in PortableApps format - so you can take Billy with you and fire him up wherever you've got Windows and a CAPS LOCK key.

The Next Floor is an interesting blend of side-scrolling action game and tower defence game. In The Next Floor your goal is to defend against the incoming waves of bad guys. You start off on one floor of a building, and you have an elevator in an elevator shaft. You move using either the arrow keys or the A and D keys, and you point your mouse at the bad guys and click the mouse button to fire your gun.

Killing bad guys earns you money, and it's a good thing, since the waves of bad guys get increasingly fierce and you must buy weapons that you can station in your elevators to automatically fire at the bad guys. Wait, did I just say elevators with an 's'? Yep -- as the game progresses you will find additional floors of the building open up, and you have the option to buy additional elevators to defend those floors.

One thing that was not immediately obvious to me is the fact that you can move the elevators around by dragging them with your mouse, and they can move even if there are elevators occupying every floor. If you drag an elevator to a floor that already has an elevator on it, the two elevators will magically swap positions. You can use the elevators to move your man around from floor to floor, but fairly quickly your elevators will have more firepower than your poor little dude's pistol, and you'll find you're not really using him.

The 15 levels of The Next Floor provide just the right amount of gameplay; any more would have become tediously repetitive, and any less wouldn't have given enough time to build up your elevators to the incredible killing machines they can become.

Google's autocomplete feature for searches can be pretty useful when you're looking for a common search term. Hey, neat! You don't have to type the whole thing! Sometimes, though, Google's suggestions take a turn for the hilarious or just plain weird. A site called Autocomplete Me collects some of the strangest ones for your amusement. Admittedly, some of these might be offensive, so viewer discretion is advised.

Who knew that searching for "the air s" would show you Monty Python's famous "air speed velocity of an unladen swallow?" I suppose that's not too surprising, but "i like to t" will find you a number of strange results, notabiy "I like to tape my thumbs to my hands and pretend I'm a dinosaur" and "I like to pretend Jesus was a mischievous badger." If you took this site and added Bill Cosby, you'd have a show called "Kids Search for the Darndest Things."

Have any favorite Google autocomplete results of your own? Put them in the comments (and send them to Autocomplete Me, of course).

So, just how good at time waster games are you? Think you've got the stuff? Well, The World's Hardest Game 2.0 doesn't think you do.

Yes, amazingly, it's possible to have a sequel to a game called "The World's Hardest Game". It doesn't seem logically possible, since if the first one was actually the world's hardest, how could another one come along and share the moniker? It made me doubt the name in the first place. That is, until I tried the game.

The mechanics of the game are very simple. You are a small red square, and you need to move around the game board collecting yellow coins or keys, and make your way from the green starting area to the green end, without getting touched by the blue hazard balls. The only controls in the game are the arrow keys to control where your red square goes.

Like I said, it looks simple. But in practice, I gave up at level 4 after over 100 attempts. I wouldn't same I'm a video game expert, but I've certainly played my fair share of games in my time, and this one is certainly one of the most difficult.

How far can you get?

The best time wasters are games that are intellectually challenging, but not necessarily frantic or anxiety-inducing. Too many puzzle games rely on a beat-the-clock scenario to make games more challenging instead of simply making the puzzles more challenging. Well, Sleepy is a time waster that doesn't do that.

In Sleepy, the goal is to remove all of the colored blocks from the screen without waking them up. If you wake them up, a wakefulness bar starts to drop, and if it reaches the bottom, you lose at that level. The more blocks that wake up, the faster the bar moves, until they settle into new positions and fall back asleep.

The challenge in the game comes from the fact that you can only remove blocks of the colors given on one of the two indicator cards at the bottom of the screen. When one of the colors is a block that is sitting on top of a pile, it's not a problem, but soon you'll run into a situation when the only block you can remove will dislodge a bunch of other blocks, waking them up.

Sleepy is a cleverly-designed game with lots of replay value, a perfect distraction for your coffee-break or lunch time. And the soundtrack is perfect if you've got insomnia - just play Sleepy for a little while and you'll be headed back to bed.

Monster's Den The Book of Dread is a lo-fi, highly addictive, dungeon-crawling, RPG. Choose one of three campaigns (dungeons), create a party of four characters from seven possible character classes (warrior, cleric, mage, ranger, rogue, barbarian, and conjuror, the classics), select from one of three difficulty levels (beginner, standard, and EXTREME), and you are off to kill monsters and gather items.

Seemingly endless levels, each with their own boss, and hundreds of possible magic items (weapons, armor, potions and scrolls) make this game very compelling for the avid dungeon crawler. I played one of the campaigns to level 118 (hangs head in shame...) before giving up on finding an end boss.

Random encounters, epic rare monsters that drop wonderful items, and the promise of more treasure just around the corner make up for this game's complete lack of graphics.

If you enjoy fighting orcs, undead, dragons, dwarves, humans, creatures from Greek mythology, and myriad other foes for the promise of experience points, stats boosts, and new spells and abilities, then do NOT play this game (or you might never stop...)

Fullmoon is one of those delightful little games where you almost don't want it to be over. A bit like Portal, I guess. You know the end is coming -- all too soon, usually -- but... you can't stop. The end be damned! You just have to shut your eyes, finish the last puzzle and pray there's a sequel (which I'm sure there will be in this case!)

This isn't your standard pixel-hunting point-and-click affair. It's actually a lot easier than most Flash games. This probably won't last you more than the ten or fifteen minutes it takes you to drink your morning coffee -- but that's OK! Games don't have to be long -- they only have to be enjoyable.

Have you taken the time to poke around your Windows 7 start menu yet? If not, you may have missed the "More Games from Microsoft" entry under the Games folder.

Click the shortcut, and you'll be whisked away to a web page offering some additional games you can download. Right now there are three: Peggle, Ranch Rush, and Bumper Stars.

Two more titles are coming soon. Tinker (the awesome puzzler you can see in action in the video above) and Hold 'Em (for you poker fans out there) are set to be released in the very near future.

Now, this news isn't going to make all Windows users smile. It's probably going to rub some Vista Ultimate owners the wrong way - since Tinker and Hold 'Em were two of the oft-talked-about-and-rarely-seen Ultimate Extras.

[via Paul Thurrott]

Phytrix is another entry into the venerable genre of falling block games. Pieces in various shapes and colors descend from the ceiling, and your objective is to rapidly organize them so that three or more blocks of the same color are touching, which makes those blocks disappear. Yes, it's two classic games - Tetris and Match 3 - rolled into one.

That's not all, though. Each level of Phytrix has its own rules. For example, maybe you need to clear 40 blocks without removing any purple triangles. This sounds insidiously challenging, but Phytrix doesn't punish you very harshly for breaking the rules. Instead of losing the game when you make the wrong piece disappear, you just get a row filled in at the bottom of your screen, pushing your pile of pieces upward toward certain doom.

It's like Tetris, except that those filler rows aren't permanent. You can remove them by clearing more of the right pieces. As a result of this leniency, Phytrix doesn't get tough until several levels in. It's a neat idea for a game, and it's fun to play for a while, but it could offer more of a challenge.

If you ever let a helium balloon float away when you were a kid and wondered where it eventually ended up, you already know what Balloons for the iPhone is all about. This cute little app lets you launch a virtual balloon with a message and a photo attached. Anyone with the app installed call pull down balloons near them -- Balloons uses the iPhone's location services -- and read messages.

I grabbed a few balloons to see what it was all about, and it was more addictive than I expected. My first balloon was an ad, launched by some marketer near my city (Boo! Hiss!), but then things started getting interesting. I caught a balloon that had drifted from London to Texas to Arizona, picking up new notes along the way. Balloons reminds me of the message-in-a-bottle feeling of the early days of the Internet -- "Hey, who else is out there?"

I tested the Lite version of Balloons, which is free. There's also a $2.99 version that adds the ability to track your balloons, in case you get really serious. TUAW interviewed the developer at this year's WWDC.

Maybe I'm old, but I remember back when arcade games were not powerful enough to do 3D video. Then one day along came a new technology called vector graphics, and 3D games became (sort of) possible. Instead of seeing a fully rendered 3D model of the various objects in the game, you instead would be presented with wireframe representations. Still, in its day vector graphics were amazing.

Fast-forward to today, and you can play a modern game based on classic vector graphics. Vector Conflict: The Siege is a shooting game where your goal is to protect your outpost from an ever-increasing onslaught of enemies. You are literally surrounded on all 4 sides, and need to carefully plan your movements between views (north, south, east, and west) to ensure that none of the baddies sneak up behind you when you are not looking.

Playing Vector Conflict is made quite enjoyable by the forgiving shooting mechanics. As long as you are aiming near an enemy, your weapons will lock on and make destroying it easier. If it sounds like the game is easy, think again. The sheer volume of enemies attacking will make sure that you are never bored.

Make sure you play Vector Conflict with the sound up, as it has one of the most engaging soundtracks of any time waster I've played. In fact, you can download the tracks if you enjoy them as much as I did.

Small Worlds is a beautiful and uniquely relaxing pixel-art platform game created for the Casual Gameplay Design Competition. The point of the game is to move around exploring each level to find he exit.

Though Small Worlds uses the typical side-scrolling view of a platform game, what makes it unique is that you start each level zoomed in tightly on your very simplified character, and you can only see the area immediately around you. Moving about reveals more of the level to you, and the camera pulls back and back so that you can see the big picture of the level you are exploring.

Small Worlds is all about exploration. You're not dealing with the plethora of bad guys that most other platform games have. Instead the enjoyment of the game comes from discovering just where you are, in a relaxed, distinctly non-anxious state.

If most video games make you feel agitated, Explore may just be the game for you. It's a charming little distraction.