Cool fan made remake project of Lego Racers in development. Some of the physics on the boosts and turning look kinda janky and stiff, but the dev said they'd work in it and it's still a one person work in progress and looks really cool to me, I loved that game as a kid and always thought it and Diddy Kong Racing were underrated and way more fun than MK64. Customizing your own minifig and kart and winning new building blocks was so cool, and the item system with upgrades and having specific items other than boosts factor into the design of the track's shortcuts was awesome. Soundtrack was full of cute goofy shit that I loved too.
Do you have any nostalgia for Rock Raiders? There's a completed project called Manic Miners that remastered the entire game, added its own remastered campaign alongside the classic one, and has custom level support. You can also make your own miners too with customization tickets to spend on cosmetics for them earned by just playing the game.
Ooh, sounds cool! I remember renting that game as a kid before and not really getting it, but the setting was kind of compelling. Love a video gamey cave with glowing crystals and/or fungi and gems and gold and so on and so on