The X-ray Orb Must Fall!
Enter an abstract realm of strange foes known as Side Effects on a foreboding quest to defeat the X-ray Orb.
Equipped with a trusty jetpack, a friend, and goodness knows what else... blast your way through 11 levels, grab whatever upgrades you can find, and prepare for the final showdown - defeating the X-ray Orb once and for all.
How to Play
Like with most games of this genre, every side effect is defeatable by jumping on its head. The same applies for the X-ray Orb, who can be destroyed only by Ground Pounding.
Jump with the arrow key, W, or Z. Use the left and right arrow keys, AD, or QD to walk around. When in the air, you can use the down key to Ground Pound. This has two times more damage then jumping, unless you have the jetpack upgrade where the damage gets increased to four times.

Unique and Evil
Watch out: many Side Effects have unique abilities, from spawning limitless Evil Cubes to hammering their head in annoyance.
Free and Open Source!
All my games so far are free and have had their source code disclosed. Feel free to make your own versions of the game on GitHub! Licensed under CC-BY-SA-4.0.