Many ppl were joking about creating a "one dimensional" game for the theme "only one". In concept, you did it! CONGRATULATIONS!
You are a dot, moving on a line in one direction avoiding obstacles (ignore the fact that the dimension of time still exists in the game...we call 3d games 3d and not 4d although they use the dimension of time as well). It would've been nice to know how the dropping obstacles are timed though. I could never avoid the vases (nice SNES Aladdin reference if it was meant to be that) because I didn't understand their timing.
The game concept is adorably simple and the (art) execution combined with some self-reflection (how stupid I look while mashing my spacebar) is hilarious. I laughed out loud multiple times.
This was an interesting and new adventure, and although never made it past the 5th block I enjoyed it very much.
I rate: "I need a new keyboard"/10