1 Freeware available for AMPED (Indie 2023), see below
AMPED is a speedrunning FPS. The goal is to get to the end of the level, while killing all the enemies. Failing to do so gives you a penalty. The game tracks the time it took for you to complete the level. If you beat your highscore, it will be saved and will be displayed.
The game includes a SDK, which allows you to create your own levels.