Walking to the right takes you to the 2nd screen where you find an alien plant that resembles a cactus. Interacting with it causes a tentacle to come out and grab the player resulting in a game over.
The 3rd screen has a pit and a moving platform that is used to cross over the pit (I remember there was a lever that might have controlled the platform somehow).
The 4th screen shows what looks like the entry to a base.
The 5th screen is the inside of the base, I believe there were 3 doors that the player can enter.
This game may have been on demo discs, I remember seeing a main menu that looked like an overhead view of a town and you would click on buildings to open a selection of games (I don't know if it was actually on a demo disc, That may not be related to this game.). This game may even be lost media at this point.
I know for sure that this game existed, and is not a false memory. Because when I was younger (when I first played it) I drew stick figures based on the game. I wont be posting any of the pictures because they also have personal stuff around them, and I don’t think doxing myself would be a good idea. And they wont help much in searching for the game anyway. Outside of proving this game once existed like I said before, these stick character drawings lack any details that would be useful. The only detail that might be useful is the 5th image might have a fire alarm related to it some how.
My best lead so far is The Adventures of Captain Comic. There is a space level that seems similar to what I remember. But this doesn't explain the cactus, or moving platform. It's possible I played Captain Comic, and another game that was similar. I remember the moving platform, and cactus in particular because these obstacles were hard to pass as a kid who didn't know what they were doing. So even if I did play Captain Comic that still doesn't explain what game(s) the that cactus was in, or what that town menu screen is from.