I'm going basic bitch today with this episode, all games today are pretty basic in design and play.

Castle Walker
You have to start somewhere and the best way to grab free clicks is to add 4000G to your game's achievements, otherwise why would you play something like Castle Walker? You ironically play a Cerulean Wizard who literally walks the castles shooting every enemy in sight with a wand with bare bones starter pack enemies and power ups along with the easiest bosses in history, the first Castlevania probably has a higher budget than this.
F-Tier Game

Ballotron Oceans
If you like billiard trick shots but also like explosions, then look no further than Ballotron and Ballotron Oceans, using a setup of obstacles in each stage you are tasked with blowing up the green ball, while Ballotron relies on the limited solutions method to puzzle solving, Oceans let's you be more creative with your shots. Ballotron sadly plays like ass, so stick with Oceans.
C-Tier Game for Ballotron Oceans
D-Tier Game for Ballotron

Aerial_Knight's Never Yield

Perhaps the easiest game to make when starting out is the on rails runners, you play Wally, a parkour specialist who is on the run from the urban cyberpunk Detroit police as he takes back what was stolen from him, sliding, jumping and running through each obstacle to escape the persistent pursuit of the security forces, Aerial_Knight is an indie developer with a background in music which really shows as he brings just the right amount of urban style to make for an engaging game with the simplest of gameplay.
B-Tier Game