I'm posting this guide because many players still aren't aware of how to fully unlock their inventory in the game, which is crucial for smooth gameplay. Having a fully open inventory is a game changer.
1st Cube (Purchase from the starting city Ishalgen or Poeta)
Line 1 (Default: 8 slots)
Line 2 (Default: 16 slots)
Line 3 (Default: 24 slots)
2nd Cube (Available at the artisan near the main city's broker for both factions)
Line 4 (Default: 36 slots)
Line 5 (Default: 45 slots)
Line 6 (Default: 54 slots)
3rd Cube (Same artisan as before, upper abyss artisan (top island), and complete a quest)
Line 7 (Default: 63 slots) -> same artisan as before
Line 8 (Default: 72 slots) -> artisan in upper abyss (top island) Jarumonerk NPC
Line 9 (Default: 81 slots) -> Quest (Asmo) Unexpected Reward or (Elyo) A Lucky Day
4th Cube (More quests and item-shop enhancements)
Line 10 (Default: 90 slots) -> Quest (Asmo) Winning Vindachinerk’s Favor or (Elyo) The Legend of Vindachinerk
Line 11 (Item shop pack)
Line 12 (Item shop pack)
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