From: South Carolina, USA
The game is perhaps best played with three players, and the Axis player must be a good strong player. The Axis must set the pace of the game, and an early failure on the Axis player's part will make for a shorter, less entertaining game. The crucial dynamic of the game is the Axis attack on the Soviet Union, and this war, even if started by the Soviets, is a must survive war for both sides. The best games will have the Axis reach their high tide, then struggle to hold their gains against threats from West and East.
Much fun comes in the side campaigns as all sides contend for the extra resources to feed the production engines. There are so many options for each side - the Med, Balkans, Scandanavia, U-Boat war, diplomacy, etc. - and great fun.
The game is playable with more than three players, but there are only three coallitions, and the players of nations which do not lead an alliance are never quite as engaged. The two player games, Western Allies and USSR vs Axis, is a good game also.
I cannot compare it to other computer games as it (RtV-ToW) is the only one that I have played, but I can certainly say that it feels much like Strategic-operational board games I enjoyed in the day. It is fun to play against the AI, to try new things, but a really good PBEM match is something special.
I cannot see how you could go wrong to invest time in this fascinating exercise.