Escape From Evil Island is a retro level-based platformer, based on the feel of DOS games from the early 90s, available as pay-what-you-want for Windows, MacOS, or Linux!
https://speveril.itch.io/evil-island
You play a spy infiltrating Evil Corp‘s island headquarters to figure out what this beloved international conglomerate is really up to.
Gameplay consists of classic run-and-jump-and-shoot platforming, with a retro-lean (in other words, this isn’t a tight, precise jumping puzzle platformer) . Levels are placed around an overworld map, allowing you to progress through levels in whatever order you choose. Most of them are optional! Shops let you spend the money you collect in-level to stock up on ammo or extra health, or to buy passes to access gated off parts of the island. Every level must be done in one shot — there are no checkpoints mid-level — but you’re free to save on the overworld wherever you want.
Source: itch.io