The Arcanum engine is quite similar to the Fallout 2 engine, except for the lack of perks and the inventory, Arcanum's main problems are that:
1) Magic has been made FAR stronger than Technology(Try playing a mage and then a technologist and you'll see what I mean, Disentigrate can kill 95% of all foes in the game with one shot, how many tech weapons can do that?)
2) The game has three modes of combat, Turn-Based(TB), Real-Time(RT) and Fast Turn-Based(FTB), TB is good enough, RT is uncontrollable and only luck decides whether you win or lose, TBS supposedly has a lot of bugs, now, tell me which mode of combat I'v described most positively.
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Worshipper of Tiax.
Wielder of the ancient Lawyer spells.
Member of the HADB clan.

Ally of the Fluffy Queen and the Dreaded Red Fluffy
General of the highest class and Leader of the Legal Department in the IW Peacekeeping Force.
ORT member, Official Demander of Stuff.
Sorcerer of Lady Lioness' Court.
"If Silence is golden, why does everyone talk so much?"