Random Game Recommendation: Quest of Ki/Kai no Bōken (Famicom)
Very simple concept; no weapons or powerups, you can only sprint and jump/float.
If you hold the jump button, you’ll keep rising until you let go. However, you can’t resume rising once you’ve let go of the button.
If you hit the ceiling or zoom into a wall at high enough speed, you’ll fall to the ground and be stunned for a few seconds, leaving you vulnerable to enemies if you didn’t already fall into a spike pit.
Use your floating ability to evade monsters, spikes and other hazards to grab a key and unlock the door in all 100 levels to retrieve The Blue Crystal Rod from Druaga.
As the name of the baddie suggests, this is in the same series as The Tower of Druaga. It’s actually the prequel to it and the main character in this game is the one you have to save in Tower of Druaga
It’s probably a bit more expensive now than it ought to be since it was featured on Game Center CX so emulation might be your best option.
It did however get an Arcade port which is available on the Switch and PS4 as part of the Arcade Archives series. I never played the Arcade version though, so I don’t know how it compares to the original.
I recommend that you watch the Game Center CX episode featuring the game even if you don’t play it. It’s a fun time.