Out of the seven games in tier 2+3, I already own six. Only Drill Core and some minor DLC is missing. They really know how to make a bundle unattractive.

Diplomacy is Not an Option was part of April 2025 Humble Choice. It was sold as a Steam key. Eventually Steam keys were not only replaced with an Epic redemption, but existing Steam keys were revoked.

Now they're selling Steam keys again, in a new bundle. The Humble Choice page is still Epic.

https://www.steamgifts.com/discussion/mNxHT/
https://www.humblebundle.com/membership/april-2025/diplomacyisnotanoption

Humble continually finding ways to be annoying to longtime customers.

EU subs:
https://steamdb.info/sub/589194, I Am Future
https://steamdb.info/sub/727067, Gourdlets
https://steamdb.info/sub/766147, URBO
https://steamdb.info/sub/629579, Per Aspera Deluxe Edition - Retail (ROW)
https://steamdb.info/sub/763640, SteamWorld Build
https://steamdb.info/sub/1377998, Endzone 2
https://steamdb.info/sub/1109526, Endzone 2: Soundtrack
https://steamdb.info/sub/1109523, Endzone 2: Artbook
https://steamdb.info/sub/885039, Frostpunk: Game of the Year Edition
https://steamdb.info/sub/442913, Diplomacy is Not an Option
https://steamdb.info/sub/64804, TerraTech
https://steamdb.info/sub/54093, TerraTech R and D Pack
https://steamdb.info/sub/413792, TerraTech - Weapons of War Pack
https://steamdb.info/sub/367353, TerraTech - To the Stars Pack
https://steamdb.info/sub/519737, TerraTech - Skin Pack: Warriors of Future Past
https://steamdb.info/sub/519740, TerraTech - Skin Pack: Fantabulous Contraptions
https://steamdb.info/sub/628081, TerraTech - Skin Pack: Falcon Genesis
https://steamdb.info/sub/449724, TerraTech - Kickstarter Skin Pack
https://steamdb.info/sub/1362013, Drill Core 1.0

want a couple of these, but not for $5 per

are the keys region locked? cause if they are and I can't gift spares to a friend of mine, it kinda loses it's appeal it barely already has

Good selection, but I do already have most of these.

Purchased in the US

Frostpunk: Game of the Year Edition
Cannot be activated in: AE, AM, AR, AW, AZ, BB, BD, BH, BM, BN, BO, BR, BS, BY, BZ, CL, CN, CO, CR, CY, DO, EC, EG, GD, GE, GT, HK, HN, HT, ID, IL, IN, IQ, JM, JO, KG, KH, KN, KW, KY, KZ, LB, LC, MM, MX, MY, NI, NP, OM, PA, PE, PH, PK, PR, PS, PY, QA, RU, SA, SG, SV, TH, TR, TT, UA, UY, UZ, VC, VI, VN, YE, ZA

SteamWorld Build
Cannot be activated in: AE, AF, AG, AL, AM, AO, AR, AZ, BA, BB, BD, BF, BH, BI, BJ, BM, BN, BO, BR, BS, BT, BW, BY, BZ, CF, CL, CM, CN, CO, CR, CU, CV, DM, DO, DZ, EC, EG, ER, ET, FK, GA, GD, GE, GF, GH, GM, GS, GT, GY, HK, HN, HT, ID, IN, IQ, IR, JM, JO, JP, KH, KN, KR, KW, KZ, LC, MA, MD, ME, MK, MM, MN, MO, MX, MY, MZ, NA, NG, NI, NP, OM, PA, PE, PH, PK, PR, PY, QA, RS, RU, SA, SD, SG, SN, SO, SR, SV, TD, TG, TH, TJ, TM, TR, TT, TW, TZ, UA, UY, VC, VE, VN, XK, YE, ZA, ZM, ZW

Per Aspera Deluxe Edition
Cannot be activated in: AE, AM, AR, AZ, BD, BO, BR, BS, BT, BY, BZ, CL, CN, CO, CR, EC, GE, GF, GT, GY, HK, HN, ID, IN, KG, KW, KZ, LK, MD, MY, NI, NP, PA, PE, PH, PK, PY, QA, RU, SA, SG, SR, SV, TH, TJ, TM, TR, TW, UA, UY, UZ, VE, VN, ZA

Frostpunk in the highsest tier? that game is cheap af on steam sales