For this ongoing Itch.io Creator Day, I'd like to strongly recommend CODE Bunny by Lavie_Azure/Seventh Star Soft.
It's an awesome 2D action platformer inspired by the likes of Sonic and Mega Man X. Fast-paced gameplay, and two characters with their own playstyles and branching story.
I played the demos back during SAGE2021 (Sonic Amateur Games Expo) and recently on SAGE2023, and really enjoyed what was on display.
Check it out - it's currently on sale at $4.99 USD (50% off!).