If you've ever been sat around worrying "What if Thomas The Tank Engine was bitten by an evil clown and transformed into a killer spider?" then great news! Someone has made your worry into a very low budget game. It is supposed to release later today (9th Dec on Steam only), and so long as the price isn't silly, I will take a gander as survival horror/choo choo trains is not a genre crossover I was ever expecting to see and it looks silly enough that it could be genius. Link to trailer is here if video is not displaying above.
( 0-6-0 + 8 legs ) wheel configuration will make it a really useful engine. It can change tracks rapidly. With no need to pull into a head-shunt, it's useful for shunting / switching jobs. Moreover, no one will dare trespass on the tracks with that thing coming in it's full glory. Network rail should consider purchasing it...