Как в Steam быстро найти игры с дополнительной копией (extra copy, 2-Pack, 4-Pack)?

Игры, что включают в себя доп-е копии:

Achron Includes a copy of Achron for a friend
Bombernauts Includes a copy of Bombernauts for a friend
Contraption Maker Includes a copy of Contraption Maker for a friend
Crash Drive 2 Includes a copy of Crash Drive 2 for a friend
Divinity: Original Sin Enhanced Edition - Collector's Edition Includes: Two copies of Divinity: Original Sin – Enhanced Edition, Classic games Divine Divinity and Beyond Divinity, Design Documents, Art Pack and Soundtrack.
Don't Starve Together Includes a copy of Don't Starve Together for a friend
Frozen Synapse Includes a copy of Frozen Synapse for a friend
Frozen Cortex Includes a copy of Frozen Cortex for a friend
Frozen Synapse Prime Includes a copy of Frozen Synapse Prime for a friend
Gun Monkeys Includes a copy of Gun Monkeys for a friend
Gravity Ghost Includes a copy of Gravity Ghost for a friend
ibb & obb - Best Friends Forever Double Pack Includes a copy of ibb & obb for a friend
Killing Floor 2 Digital Deluxe Edition Includes a copy of Killing Floor 1 for a friend
Mother Russia Bleeds Dealer Edition includes a copy of Mother Russia Bleeds for a friend
Onikira - Demon Killer - Contributor's Pack Includes: Onikira - Demon Killer; Onikira Soundtrack; Art Work from Digital Furnace Games; A Gift-copy of Onikira - Demon Killer for a friend
Prison Architect Introversioner Includes Uplink, Darwinia, DEFCON and Multiwinia
Space Farmers Includes a copy of Space Farmers for a friend
The Showdown Effect Digital Deluxe Includes a copy of Magicka
Trapped Dead: Lockdown 4-pack includes four copies of Trapped Dead: Lockdown - send the extra copies to your friends. Also includes one copy of the original Trapped Dead.
TRISTOY Includes a copy of TRISTOY for a friend
TRON RUN/r: Ultimate Edition Includes a copy of TRON RUN/r for a friend

еще 7 days to die