Since Ellipsis hasn't been mentioned yet, here's my recommendation:
Ellipsis is an action-packed Avoid ’Em Up with minimalistic, yet powerful neon styled visuals. Guide your ship through a mysterious universe while deftly avoiding hordes of roaming enemies, spikes, lasers and more.
I wouldn't call Dave the Diver new (released exactly a year ago) nor indie (Mintrocket is a subdivison of Nexon). Yet it's something that can be recommended wholeheartedly.
Couple of games in no particular order that are pretty new and can be considered as indie:
Nothing to see here. According to 72.ru, one of the most likely reasons to fall out of window is "heart conditions". No joke. Source: https://72.ru/text/incidents/2023/12/28/73068230/ - "One of the most likely causes - heart problems, - our interlocutor clarified." - Translation by Firefox Translations.
Since Ellipsis hasn't been mentioned yet, here's my recommendation:
Ellipsis is an action-packed Avoid ’Em Up with minimalistic, yet powerful neon styled visuals. Guide your ship through a mysterious universe while deftly avoiding hordes of roaming enemies, spikes, lasers and more.
Ellipsis on Steam Store