which I have to print?
It's more like dungeons and dragons, except much simpler. You don't necessarily need to print it, although you'd probably want a grid mat to draw the platforms on. There are plenty of online tools for this sort of thing as well.
To follow up further, if you have any interest in tabletop RPGs at all, not just this one, please let me know! It's a lot of fun, and especially right now during covid, a lot of people are playing online and it's a fun activity to do with your friends.
Obviously there's this RPG here, or lasers & feelings which it is based off of which is super simple and is linked in the description for this game. Despite the popularity of Dungeons & Dragons, I actually wouldn't necessarily recommend the current edition, as it's fairly complicated (and also not my personal preference), but if you did want to start with D&D 5th Edition it's certainly doable. There's an RPG called Fate which I think is another good introduction RPG. There's a website, drivethrurpg.com, which is kind of like the steam or itch for tabletop RPGs, selling mostly digital, but also some print options. Pixels & Platforms is not available on drivethrurpg, but plenty of other great games are available on itch and drivethrurpg.
You can read more about my thoughts on tabletop RPGs at weirdwonderfulworlds.blogspot.com
Alternatively, you can check out r/rpg on reddit, or any number of other rpg subreddits such as r/osr (focused on old-school D&D). Also, I have a blog list on my blog with many other awesome tabletop rpg-related blogs. If you're the type, there's a whole rabbit-hole for you.