Soonic

Soonic is a game by DarkendMatter.

About
In the game, everyone spawns as a blue player with the Soonic outfit from the catalog of the group "Soonic Fans!", and a remix of Angel Island Zone Act 1 from Sonic the Hedgehog 3 plays. There are 2 Zones - Spine Hill and Waterfall Zone. Each zone has a different boss.

Spine Hill Zone
You're meant to play this zone first. It's a grassy area, with a sign that tells you how to jump (PC only). There are some spikes after the sign, and an enemy. Eventually there is a wall which you need to jump over. After the wall, there is a tunnel, that teleports you to the boss.

Boss
The boss is a giant spinning fan. At the first stage, the blades are cut off. Once you jump into the red button on the back, however, the blades are attached, and the fan is faster. Again, you need to jump on the red button on the back. You will then be teleported to a blue area with a teleporter to the spawn.

Waterfall Zone
The zone starts with a rocky area, 2 (or 3) waterfalls, and the jump sign. At the first corner the spikes return.