Cool, sounds good. I'll admit I posted that before I looked at your github project to understand how these games will be incorporated together. I added some Makefiles so I could build the ROM in Linux and had to make one minor fix for an error that might be due to gbdk-2020 versions.

Nice work so far! I'm going to try hard to match your graphics and sound quality, which is new for me. I'm looking forward to trying some new tools and libraries. Here's some ideas I have so far, though I'll be happy to finish just one or two:

• "Present X slides! " where X is 5 - 25ish, and the player has to tap the "next slide" button exactly X times to deliver a PowerPoint presentation
• "Play the tune!" - the player has to press a sequence of buttons on music staff, sort of like playing songs in Ocarina of Time
• "Slay the monster!" - a simple quick-time event sequence to fight a monster/opponent inspired by Souls-like parrying, dodging, and attacking.
• "Set the time!" - an alarm clock blinking "12:00" has to be set to the same time as displayed on a cell phone, using a simple Hours/Minutes button interface
• "Complete X laps!" - a slot car simulation where you have to race around a simple track within the time limit. If the slot car is going too fast around a turn, it will fly off.
• Also considering how to put a creative spin on these generic microgames:
  • generic balancing game - keep something from tipping, but since the GB does not have analog input, I want to think of how button/d-pad input can be used most effectively
  • race - left foot, right foot sequence to run, or row a boat to  reach a finish line. Maybe a twist would be having a three-legged race where you have to control two people at the same time, so the sequence would be Left &  A, then Right & B at the same time to coordinate the running.
  • shake the X, like shake all of salt out of a salt shaker
• And reuse the assets for variations, like reuse the alarm clock for a simpler "Hit snooze" game, or reuse the slot car for a reaction time game.