Algodoo

The G.W. Tiger is a German tier 9 self-propelled gun.

Development of an SPG on the chassis of the Pz.Kpfw. VIB Tiger II started in 1942. The project called for designing a common self-propelled gun carriage for the 17 cm Kanone 72 gun and 21 cm Mörser 18/1 howitzer. The concept of the SPG allowed the use of artillery systems from both the carriage and the ground. Work on building an experimental prototype began in 1945.

With its largest gun, this massive artillery hits for roughly 1,100 damage, but fires at only 1.49 rounds/min. Due to its large damage output, the GW Tiger is one of the most feared artillery on the field. Following the tradition of the other German artillery, the GW Tiger is fairly mobile (although noticeably less so than the Hummel or G.W. Panther) for its size and is capable of speeds of up to 45 km/h.
(Wargaming Global Wiki)

controls:
Drive - Left and right arrows
Gun - W and S
Retract hydraulic jack - Z
Extend hydraulic jack - X
Pull in hydraulic jack - D
Pull out hydraulic jack - A