I like the simplicity of the game. The control's felt simple, and the music and sound effects felt fitting for the game and the events that occur (grabbing the coins, jumping, flipping the flag).
The start of the game can feel inconsistent, as the platform may be lowering already with few coins to grab, or the platform is raising and there's a multitude of coins to grab. I was also surprised by how long I can remain offscreen only to die afterwards. This feels as though there's something off screen that I can avoid in order to prolong the game, but I cannot tell if that was the intention.
I did try to do an infinite jump where I alternated between reversing the flag to regenerate jumps and then pressing space, though sometimes the regeneration failed to occur. This mechanic does feels like it can introduce an technique or strategy for advanced players.
Overall, it is simple arcade-style game with a control scheme that can possibly result in advanced techniques if polished further.