LifeBanana

My very 1st game that I ever made
Survival
Simple Robot Shooter
Run in browser
Make your orchestra team the best teamout there
Card Game
Play in browser
Mafia forces Serial Killer Surgeon to pay off their debt in the Black Market
Action
Crash Minions into Monsters
Play in browser
Survive as long as possible until you eventually die from the Black Hole.
Survival

1 and done games that all can easily be made in a week