I noticed the Server Transfer shown in the teaser isn't in the singularity game, but that's ok, still great game overall!
Ha, good catch! We're saving a handful of mechanics for the full game, but we couldn't resist using transfers for visual flair in the teaser.
Also thanks so much for your feedback and kind words! FYI, quicksaves are definitely on our to-do-list, as is more flexible control/key mapping.
Just a bit of additional context, the trailer on our website was mainly put together to accompany playable in-progress demo builds of BIT RAT for various events last year. This was before we decided to release the first part of the game as Singularity, so there are some levels and other stuff shown briefly in the trailer that you won't see in Singularity but will see in the full game.
Thanks for playing and commenting! It's honestly inspiring whenever someone enjoys the game enough to play through to the end, I know we didn't make it easy!
-Nick [bucket drum games]