It took me some time to understand a bit how the controls/game worked but couldn't master it. I was expecting to lose at some point but the game keeps running forever but input is blocked, not sure if I have to restart the page to restart playing.
Viewing post in flares & ladders jam comments
The reason I did the controls like that was to always have the down arrow be delete. If I was to remake the game from the start, I would probably have made the buttons R, Y, V, N (i.e. R always goes left up, Y always goes right up, V always goes left down, N always goes down ) and have delete ladder just be its own key. I ran out of time to make a game over screen, so locking the player out of controls and scoring was my comprise because you can still see the score you get. You are also right that the game can only be restarted if you reload the page (also done because I ran out of time).