Carry Bag in +1 Forge Blade Loot: Slot Capacity and How to Increase It

Your carry bag in +1 Forge Blade Loot is where the ores and dungeon drops you pick up while clearing stages pile up. Capacity is counted per item — players read the count as "slots" — and it starts small: one player says he "started with three items." The only increase method any footage confirms is completing Index entries, and the game itself announces the cap with an "Inventory is full" message mid-run. Paid options exist — an R$49 Big Bag game pass and an 80-Robux "+5 slots" shop product — but no recording shows either one actually raising the limit.

What the carry bag stores, and how you know it's full

The bag (the game's backpack) holds the ores and dungeon drops you collect during stage runs — the materials you'll later spend on forging swords. Capacity is counted in individual items, not weight or stacks.

Two playthroughs show what that means in practice:

• An English-speaking player, early on: "I started with three items." After Index progress gained him more backpack space, he showed "13 items here in my backpack."
• A Thai player grinding late stages filled his bag repeatedly during runs and ended a session at "my inventory is full. 18 slots."

These are single-session snapshots at different progression points — 3, 13 and 18 are observed states of a growing bag, not a fixed ladder of cap levels. Whether forged weapons and armor also occupy slots isn't shown in the footage; ores and dungeon drops are what's observed.

One honest gap: none of the reviewed footage shows where, or whether, the game displays a numeric capacity counter. The only limit signal seen in play is the "Inventory is full" message that appears when the bag can't take more.

How to get more bag space: complete the Index

The Index is the game's collection tracker for ores, and filling it is the one method both playthroughs confirm:

1. Collect ores while clearing dungeon stages. The Index tracks which ores you've gathered — the same runs that fill your bag fill your Index.
2. Complete the entries those ores belong to. As the Thai player explains: "If we collect ores until we complete it or as required, we get a bigger bag, meaning we can hold more ore."
3. Keep the space once entries complete. The English player states it directly — "You gain more space in your backpack" — and his bag visibly went from 3 items to 13.

Success is easy to recognize: the "Inventory is full" message starts interrupting your runs later, and eventually not at all. What no source pins down is the exchange rate — how many entries, or which ore tiers, buy each extra slot, or whether the bag has a final maximum.

When the bag is full mid-run

Hitting the cap doesn't end a run. Two behaviors were observed in a single session of the Thai playthrough: with the bag full, a pricier ore still gets picked up — "If we find a more expensive ore. It will collect it for us," the player notes, praising the system — and dying doesn't wipe your haul, because as he put it before a boss attempt, "if we die, we still get the treasures or ores." Both come from one transcript, so treat them as observed once rather than guaranteed rules.

Big Bag pass vs. the 80-Robux shop product

Two paid products touch bag capacity, and the evidence keeps them separate:

• The Big Bag game pass was listed at R$49 on Sep 11, 2026 among the game's five passes (R$19–99), alongside Luck Boost, 1.5xCoin, Super Luck Boost and Supreme Luck Boost. That is a listing only: no footage shows a purchase or the capacity change it delivers, so despite the name, how much — or whether — it adds space is unverified.
• The in-game shop bag capacity product is what the Thai player reads as "the bag capacity increases. 5 slots 80 Robux." He moved on without buying it, so the +5 figure comes from the shop text itself, and its behavior in practice — repeat purchases, stacking — is unobserved.

Crucially, the only "+5 slots" text in any reviewed source belongs to the 80-Robux shop product, not the R$49 pass. Don't assume Big Bag adds five slots; whether the two offers are connected is unknown.

If you're weighing either purchase, check the game passes page to verify what's currently offered before spending Robux. And since a bigger bag mainly means more ore per run, the monster drops page covers where that loot comes from.