Thanks for the kind comments and good feedback! Agent 747 is my oldest game published online. I recently replayed a bit of it myself and agree with your last paragraph. I also find that precision jumping is difficult compared to my later game Solumnoid.
I'm glad you enjoyed the level design! That's always been one of my favorite pasttimes. I feel like I'm making games as an excuse to make levels half of the time. I grew up making puzzle levels for other games and I think of platform level design like puzzle-making too.
To answer your last question, I've considered making another action platformer but haven't gotten around to it yet. From Agent 747 to the present, my game release history here has been a mix of genres that only sometimes overlap:
- Agent 747 -- GM8 -- Action platformer
- Ghost in the Mainframe -- GM8 -- Action twin-stick shooter
- Spacerslide -- GMS1.2 -- Slider puzzle
- Minesweeper, but with Powerups -- GMS1.2 -- Puzzle replica / redesign
- Solumnoid -- GMS1.2 -- Puzzle platformer
- Chrysanthemum -- GMS2 -- Action puzzle replica / redesign (IN DEVELOPMENT)
I'm nostalgic about the old versions of GameMaker but am enjoying GMS2 now that I've learned how to organize/work efficiently in it. I was lucky enough to get a permanent license before they moved to subscription.