Hi there, I hope I'm violating any rules or anything.
I've been developing a 2d platformer-runner hybrid (which takes place in a playable story layer, which is about the guy who is playing the platformer!), for a very long time. I believe it is a very good fit for speedrunning and it is still uncharted waters for many players!
I finally managed to release it a week ago (It's still in 10% discount for 3 hours!), please consider grabbing it in case you're interested! I'd love to hear your opinions about the game!
Check it out: https://store.steampowered.com/app/1082000/A_Night_at_the_Races/
There is no demo, but recently a speedrunner has uploaded an amazing run of the full game in normal mode! (encore levels not included!)
Music is turned off in some scenes and you might want to skip story parts to avoid spoilers, but it showcases the gameplay very nicely:
Looks fascinating! And no worries about rules, it's quite all right for devs to post about their games.