Gorky 17 (released as Odium in North America) is a turn-based tactics computer game developed by Polish developer Metropolis Software and published by Monolith Productions for Windows in 1999.http://www.youtube.com/watch?v=t8rKazWfqOw
The game features two modes: In the real-time 'exploration' mode, the player controls game characters using a mouse in a point-and-click manner to navigate the player characters through the city as well as interacting with various objects in the game world.
Combat takes place in preset encounters located in specific areas of each level map.
In the 'combat' mode, the screen is divided into squares with player and computer-controlled characters taking turns trying to eliminate the opposing party. In one turn each game character can move by a certain number of squares and use a weapon once, or decide to take cover instead. Weapons have different tactical effects, for example the pistol can only be fired orthogonally, while the rifle can be fired orthogonally and diagonally.
The game ends if any player-controlled character dies.
tl;dr Isometric point & click exploration & turn-based tactics combat with minor horror elements and super cheesy characters.
Thought it might be an interesting game to be streamed, played it myself when I was younger.