Given that I will never make video games, I figured that I would start a thread where people can share their ideas of video game mechanics with the hope that someone might be able to realize them. This thread is meant to about core game concepts and not plot, so I hope that we can stay on topic.
My first idea is probably more complex than what a first-time developer would feel comfortable doing as a beginner's project. The concept is as thus:
a side-scrolling platformer where one plays a boxer. When the character loses all health (or "stamina"), said character falls over like in Punch-Out!!, where the player must rapidly press the buttons to make the character stand up before the count reaches 10. Being knocked down 3 times would result in a TKO, making the player restart the stage or whatever, but a well-timed button press would give the player another chance (with the timing becoming increasingly stricter with each successive time the player avoids TKO). The boxer would also be able to recover health by leaning on things, including enemies, much like how boxers lean on each other for a breather. The idea may seem stupid, but I thought it would be interesting.