A fun runner that uses both optional themes. I think the highest score I got was 11500.
Graphics: Colourful and fun. I particularly like the enemies.
The title, end and tutorial screens keep the style of the game and I like the tutorial screen although it would have been nice if it also showed images of the obstacles and said what they were.
I do wonder why so many games I’ve seen over the years have coins as a collectable, but I guess it’s become so common I just have to accept it.
And the enemies are cute.
Sound: There’s only one track of music, but it fits the pace of the game and considering a run can be kinda short it’s nice that it doesn’t start and stop every time you die. And it’s interesting enough to listen to that I’m leaving it playing while I type this feedback. And pretty nineties too.
The sound effects too add to the fun. There’s even several ones for the different types of enemies, and one for the coins too.
Fun: This game is pretty simple, but pretty fun. And after each round I can quickly do another one, yet I do always get to see the score even if I were pressing space to switch worlds the moment I died.
Nineties: Those enemies aren’t extremely detailed, so I guess they could probably work. And if there had to be a lot of them on screen at once I’m guessing the ones furthest away could be replaced by sprites without it being very noticeable. Or maybe this game would be running on something else than a console… an arcade machine, maybe? I think those were still common in the nineties.
Optional themes: I see you used both of them. You even built them into the controls. You press space to go to to space and to go back from it. Thankfully the ship controls the same way in both environments.
What I liked most: flying around and switching dimensions… and those sound effects.
What I’d suggest changing: Letting me view the tutorial again without reloading the page or frame.