Tom Clancy's Rogue Spear ((Or something like that, i remember playing when kid on some console it was a realistic tactical shooter with nonlinear level pretty epic game)) I'd love a realistic shooter similar to that...Gog especially if one of those is here...Also wasn't Arma 2 here before ;/? Sadface... I got arma 3 on steam but it hurts my rig a little...Cheers help

-The original Tom Clancy's Rainbow Six, Rogue Spear and addons were the sequels.
-Rainbow six 3

Other similar titles could be the original Ghost Recon, Rainbow Six Lockdown, The Sum of all Fears, Rainbow Six Vegas, Brothers in Arms, Project Eden, SWAT3/4, Terranova.

Probably there are more but the singular Rogue Spear Style is only available in the First era Rainbow Six games.

I've never played anything that starts with Tom Clancy's but based on your description maybe you'd like the Hidden & Dangerous games, both available here at GOG...

Rogue Spear? Now that takes me back :) Excellent game - will have to try and track it down someday to try and finish it (I recall it being very difficult)

The most recent game I know of that is excellent and that also has a similar planning phase is Raven Shield :
steam page
gog wishlist

If you don't mind losing the pre-mission planning thing with the waypoints and such, both SWAT 3 and SWAT 4 are excellent (but difficult)

Thanks guys ilu