List of bugs found in Youtube videos:
"Entering station" bug (RT1, RT2)
If a train touches the station but is pulled out by gravity or chainlifts, it may leave the station and travel the other way while still in "entering station" status. This causes the train to travel through the track at constant slow speed, even uphill. If a train in such status reaches the end of a track, instead of falling off it will switch to "moving to end of station" status and move forward again until it reaches the end of a station.
https://www.youtube.com/watch?v=V0jru_0LdFk
https://www.youtube.com/watch?v=IZqw6Jgi5pU
https://www.youtube.com/watch?v=GVgKUoEvFjo
https://www.youtube.com/watch?v=75exTABPQSo
Train physics bug (RT1, RT2)
Under certain circumstances, a train may gain more speed than should be possible when travelling across hills.
https://www.youtube.com/watch?v=XdzOKB7fZOM
Dinky Park road bug (RT1)
After buying construction rights, it is possible to delete or interact with part of the road outside the park.
Observation tower bug (RT1)
I'm not sure on the details of this bug since the Youtuber didn't put a good description. But it seems to be a graphical bug or attraction softlock bug that happens when building a too low tower. It is said this can happen with other tower attractions too (Whoa Belly, Roto-Drop).
https://www.youtube.com/watch?v=fD0aWOsL-lQ
Underground entrance bug (RT1)
On rare occasion, guests will not enter an attraction's entrance when the entrance is built underground.
https://www.youtube.com/watch?v=G5DKslDZmFE
Boat ride bug (RT1)
Lower water tiles that has a boat on it. The boat will then float in the air.
https://www.youtube.com/watch?v=wCeT3my9hIk
Grass removal trick (RT1)
Using the land leveler tool on tiles that have tall grass will clear the grass.
Easter egg trick (RT1)
There are easter eggs related to guest names, e.g. if you name a guest Chris Sawyer he will take photos, or if you name a guest Michael Schumacher, he will be extra fast when on the Go Karts ride. The trick with this is that the game will accept different capitalizations of the same name. So there can be multiple Chris Sawyers and Michael Schumachers.
People falling through the ground (RT1)
Lower and raise a ground tile that has guests on it to make them fall through the ground. Alternatively, have guests walk across underground path and delete the path. Guests that touch the very bottom will be deleted from the game.
Station brake failure bug (RT1)
When there is a station brake failure in a non-looped track and the train moves into the station at high speed, it will not crash.
Whoa Belly Invisibility bug (RT1)
When launching from very high terrain, the ride from a Whoa Belly will become invisible temporarily.
https://www.youtube.com/watch?v=5OPXgy-DWls
Infinite money bug (RT2)
When stacking platform scenery on top of each other and then building an attraction onto the scenery (while holding Shift), you may gain more money back than you invested in the scenery.
https://www.youtube.com/watch?v=00pWjlbevZg
https://www.youtube.com/watch?v=AKYJkjYGo5E
https://www.youtube.com/watch?v=D1q9uhsO9do
https://www.youtube.com/watch?v=HyaAyjqAorU
Chairlift bug (RT2)
Under certain circumstances, a ride on the Chairlift may accumulate speed and cause a crash while not moving at all due to the track being blocked by other rides.
https://www.youtube.com/watch?v=TuWx5CGL_Mk (OpenRT2 mod)
Maybe more can be found
here.
I think I will do a game resource page later on, maybe with GIFs. I know this game isn't suited for speedrunning but I take an interest in glitch discoveries and documentation.
It seems that pretty much every level has a "Wing" upgrade that allows your mech to fly above the level for about 10 seconds or so, although at the cost of some X-speed. This might come in handy in some places to overcome walls, or to get a good shot at a boss etc. Or in level 5 to reach the secret exit faster. It seems you can carry over Wing items across levels.
In level 4, at the first wall, you can actually use an arrow to skip it. There is only one tile (the one I aim at in the pic) that can be arrowed, so it's something the devs put in deliberately. Not sure if faster to shoot the wall or to arrow across it. It might also be possible to arrow at other seemingly un-arrow-able places.
Maybe more to come later.
Oh also, if I didn't document it here yet: There are some cave entrances or castle entrances in this game. It seems they are only for aesthetic effect, but I had edited level camera position(I think?) and it allowed me to see a room that was filled with enemies that didn't appear anywhere in the normal level. So maybe at some point in development you were able to enter such entrances and it was later cut from the game. Needs more looking into if you want to put that on TCRF.
EDIT: Oh, actually turns out the entrance in level 6 that you can shoot open (at a castle) and the caves in level 3, you can press Down to use those entrances as a shortcut. But from the looks of it, it's slower than moving on normally. Maybe I was wrong about stuff being cut from the game then.
EDIT: Looks like the level 9 bug emulates differently in Bizhawk-Gambatte. It's kind of the same, but much more prone to crashing and there is more variety in the glitch effects that can occur. Too bad the bug is in the last level, otherwise there would have been ACE potential.
EDIT: