XMoto

XMoto is an open-source computer platformer game. The game contains many levels, the vast majority of which require you to find and collect all the strawberries, then find a white daisy and touch it. In addition, you lose if you hit any block with your head or touch any part of your body or wheel to prickly iron balls ("pests") or special areas (such as lava).

Subsequently, scripted levels were added to the game. For example, in Asteroids Field you have to pass through several tunnels made of spiky balls using the fictional jet engine: pressing key "A" activates the jet engine which throws the motorcycle upwards. And on the AgAlAgA level the game's look was transformed to that of Space Invaders - a game where you have to dodge the shells of the approaching space invaders, and in the meantime hit the enemy forces with your own shells.

In short, changing gravity, "intoxicating" the player (see Lothar's Beer Party level), an earthquake (Dragon) and "Skate Park" (levels where you have to score a certain number of points for flipping your motorcycle in the air; see Half Pipe) are just some of the features already used by the level designers.

Also, chipmunk physics has been added. For example, if you crash into an object, it shifts. If an object can fall, it falls. However, the physics is not fully worked out: for example, being on a moving block, you need to accelerate in order not to fall off it, instead of braking, as we would do in real life.