Physics Games and Physics-Based Game Downloads

(Rate this game! 208 votes, average: 3.92 out of 5)

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Tower of Goo by Kyle Gabler is a product of the inaugural Experimental Gameplay Project. Kyle was a member of the first group of Carnegie Mellon University students. Since then, the project has grown–expanding in scope past the Entertainment Technology Center–but Tower of Goo is still a seminal example of the program’s success [pun intended].

Structural Integrity…Failing!

Tower of Goo is best described as Bridge Builder in real-time. The little blobs of goo crawling around your tower can be picked up and dropped as supports. Clicking on a piece of goo and dragging it around will highlight available locations: either as one span between two existing points, or two spans for a new point connecting two existing points. It makes a lot more sense when you see it in action–check the video.

Like many of the Experimental Gameplay Project games, there is no explicit goal in Tower of Goo. Implicitly, however, the goal is to build up. The game’s sole bit of statistical feedback is how tall your tower is. When you reach new heights, a happy bit of text appears as reward.

Blue Team, Goo!

What’s great about Tower of Goo is that the little blob guys, your resources, aren’t static. They actively climb around the tower trying to reach the highest point. Their weight will actually affect the tower, too, so if they all climb to one side of the tower you may need to quickly counteract by adding some weight to the other side. If your tower starts to significantly fall, you’re usually screwed; maybe some quick repair on the weak side will fix it. Maybe. Usually not, and everything comes crashing to the ground. No worries, though–you simply keep building from where things lay. There’s no timer and no game-imposed punishments.

Multiple Play Styles

The real-time nature of Tower of Goo supports multiple play styles. One player can choose to build slowly and carefully, making sure everything is stable before expanding. Or, and this is how I usually play, one can play very quickly. Careful placement isn’t as important as growing your structure as fast as possible. Of course, this typically results in a catastrophic failure of the tower at some point. But hey–that’s most of the fun.

(Tower of Goo Game Screenshots)

It’s Goo Time

The original Tower of Goo took four days of Kyle’s time to develop. Since then, he’s released Tower of Goo Unlimited which enables unlimited vertical/horizontal expansion. It’s remarkably fun to play with, although without the meta structure of game goals on top of the mechanic it will get a little old. Still, it’s a small download and it’s totally free. Why aren’t you playing it already?

Download Tower of Goo Unlimited here (2.32 MB), or head over to the Experimental Gameplay Project website for more information.

(Rate this game! 151 votes, average: 3.66 out of 5)

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Ragdoll Matrix Reloaded is the sequel to Ragdoll Matrix, both by R-Tsa Games. The premise of both games is the same: You control a ragdoll character, trying to dodge bullets and bombs. In Ragdoll Matrix Reloaded, they applied the obvious theme of the Agent Smith character from the Matrix movies. It fits well.

Controls

The controls in Ragdoll Matrix are keyboard-driven. The arrow keys move you around, lead by your head. You have the ability to defy gravity, too, although only in limited amounts. The green meter represents how much anti-gravity juice you have left. It recharges pretty quickly, almost to the point where you could constantly hover.

The ragdoll character feels very sluggish. I suppose this adds to the difficulty of the game, but at times I’d wish things could be a little snappier. Compare the movements the agent character in Ragdoll Matrix Reloaded to the more fluid and responsive movements of the figures in Ragdoll Masters (which was inspired by the first Ragdoll Matrix game, by the way). Tuning a physics system to feel responsive is certainly no easy task, but I get the sense that the folks at R-Tsa didn’t do much at all in this department. It shows.

There are a set of advanced controls in Ragdoll Matrix Reloaded: the ability to go stiff, control your entire body, and stick your legs and arms to the ceiling. Unfortunately, you need to unlock these by abilities by playing through the game on various difficulty modes and settings. The little I was able to unlock was hard to control and not very intuitive.

Difficulty Progression

The goal of the game is to dodge bullets. At regular interviews, a handful of bullets come firing in from random positions on the screen. They always aim at you, so a good rule of thumb is to keep moving around the screen. The game has a very nice cinematic feel when events line up properly; bending over backwards to just barely dodge a bullet is a lot of fun.

On the harder levels, the bullets move faster, do more damage, and the game introduces bombs. Bombs bounce around and then explode, which in practice simply transform a section of the screen into a no-go zone.

Play Modes

Ragdoll Matrix Reloaded has a very neat asymmetrical same-computer two-player game mode. One player controls the Agent Smith character, as usual, but the other player moves the mouse cursor and gets to control the shots. They’re given a number of shots to fire at once, and get to click anywhere on screen to fire there. It’s much more interesting compared to the single-player mode, where the shots are always aimed directly at you.

There’s a proper networked multiplayer mode, too, although I wasn’t able to try it out.

Technology

Ragdoll Matrix Reloaded was created with Game Maker. Physics are handled by ODE via the GM_ODE bindings. It’s great to see physics games being produced by the game-development-for-everyone style middleware and packages.

(Ragdoll Matrix Reloaded Game Screenshots)

Dodge This!

While Ragdoll Matrix Reloaded probably won’t hook you to the point of playing every day for hours at a time, it’s certainly a fun distraction. As physics games go it’s worth checking out. And, it’s freeware. You don’t have a reason not to play!

Download Ragdoll Matrix Reloaded game here (17.7 MB), the music-less version here (3.0 MB), or head on over to the R-Tsa Games homepage for more information.

Hey everyone! Anyone keeping careful count probably noticed the site drop from three updates per week to two. Fear not, it will go back to three/week soon–the reduced activity has been due to preparation for this year’s Game Developer’s Conference. I’ll try to update next week during the actual show, but more than likely I’ll be completely swamped with other activities.

Feel free to stop by and say hello if you’ll be attending the GDC this year. One of our company’s casual games, Glow Worm, is nominated in the Independent Games Festival for art and audio this year. You can find me at our booth in the IGF pavilion when I’m not in a meeting.