Last updated: 24 August 2026

Terraria 1.4.5 Bigger and Boulder — What's New

After roughly three years of development, Terraria's 1.4.5 update — subtitled "Bigger and Boulder" — landed on January 27, 2026, adding more content in one release than most full games ship at launch. If you're wondering whether it's worth updating an existing world, or just want the short version of everything that changed, here's what actually matters.

01Release Details

Terraria 1.4.5.0 released January 27, 2026 across PC, console and mobile. Re-Logic followed up with several hotfix patches addressing bugs and balance issues; the current stable build is 1.4.5.7 (PC, released August 19, 2026 — console and mobile versions follow separately), which Re-Logic has described as the last planned hotfix for Bigger and Boulder. As with every past Terraria update, it's a free download for anyone who already owns the game — no separate purchase or DLC involved.

02The Crafting Window Overhaul

The single biggest quality-of-life change in 1.4.5 is a complete rework of the crafting interface. The new crafting window adds a search bar and filter tabs, so instead of scrolling through every recipe you can currently make, you can search by name or filter by category — a huge time-saver once your recipe list balloons in the late game.

Two related changes make crafting itself more convenient: you can now craft directly from nearby chests without manually pulling materials into your inventory first, and right-clicking a crafting station filters the list down to only what's craftable at that specific station, cutting through clutter from recipes that need a different station entirely.

03650+ New Items and Crossover Content

1.4.5 adds more than 650 new items, pushing Terraria's total item count past 6,000. Highlights include:

• 9 new whips for Summoner builds, expanding one of the classes that got comparatively little content in 1.4.4.
• 60+ new hairstyles, 22 furniture sets, and 20 new paintings for base-building and decoration.
• Dead Cells and Palworld crossover content — themed weapons, armor and accessories referencing both games.
• 4 new transformation mounts, including ones that turn you into a bat, a rat and a velociraptor, plus 2 new Pylons for the fast-travel network.

Because this is a huge amount of new gear spread across every stage of progression, don't expect to see most of it on a single early playthrough — a lot of it is themed loot tied to specific new content pockets rather than a straight replacement for existing best-in-slot items.

04World Generation: the Skyblock Seed and Seed Combining

World generation got a genuinely new mode with the Skyblock seed: you start on a tiny floating island with almost nothing, with a Shimmer island visible in the distance, forcing a completely different early game built around scarcity rather than exploring a full map.

Alongside it, 1.4.5 lets you combine special seeds for the first time, using a new seed-selection window in the world creation menu — so you can stack modifiers like Don't Dig Up or For the worthy instead of picking just one.

05NPC Housing No Longer Blocks New Arrivals

One of the more player-friendly changes: NPCs can now show up in your world even without a finished, valid house waiting for them. Only one homeless NPC arrives per day, and they'll leave again by nightfall if you haven't built them proper housing in time — but this removes a common early-game bottleneck where new players lost track of an NPC because they hadn't realized housing requirements weren't met. The housing query itself also got clearer visual feedback about what makes a room valid.

06Smaller Mechanical Changes Worth Knowing

• Conveyor belts can now carry items upward, not just sideways — useful for compact vertical item-sorting builds.
• Mannequins can hold items and mounts, extending what they were previously limited to displaying.
• Stack size cap raised to 9,999, including for weapons with modifiers — previously most non-stackable weapon variants couldn't stack at all.
• A `/bossdamage` chat command was added, showing a live damage-contribution tracker during boss fights — handy for multiplayer groups figuring out who's actually carrying a fight.
• 8 new boss themes were added, giving several bosses dedicated tracks for the first time, and there's a broad pass of performance improvements throughout the engine.

071.4.5.7: Mana Regen, Yoyo Rework and Gem Staff Overhaul

Released August 19, 2026 on PC (console and mobile to follow), 1.4.5.7 is Re-Logic's last planned hotfix for Bigger and Boulder — and it's a much bigger patch than a typical hotfix, reworking three separate systems rather than just tuning numbers.

• Mana no longer fully stops regenerating while you attack. Casting magic weapons used to pause regen entirely; now it keeps ticking up at a reduced rate mid-fight, while standing still still doubles the rate — removing a lot of the old stop-and-start rhythm mages had to play around.
• Yoyos got a real rework, not just number tweaks. Several Hardmode yoyos gained unique on-hit effects: the Kraken (now a Duke Fishron drop) jumped from 95 to 120 damage and gained a whirlpool that widens its hit detection plus piercing wave shots every 4th hit; Cascade now explodes for 200% damage every 2nd hit; Format:C became craftable with a much higher crit chance and crit damage; Yelets applies Acid Venom on every hit; Chik bursts into crystal shards every 3rd hit (its base damage was also trimmed from 39 to 34 to offset that); and the Eye of Cthulhu yoyo periodically spawns a piercing Eye of Cthulhu afterimage that dashes into the nearest enemy. Every boomerang and yoyo also snaps back to your hand faster the more melee attack speed you have.
• Gem Staves were rebuilt from a flat damage ladder into seven distinct weapons. Diamond and Ruby are no longer simply "the best" — each gem (Amethyst, Topaz, Sapphire, Emerald, Ruby, Diamond, Amber) now gives its staff a unique shot behavior (homing, explosions, extra projectiles, piercing, and so on), and wearing a matching Gem Robe adds a flat damage and knockback bonus.
• Loadout equipment sharing — favorite a piece of gear and it becomes usable across all of your saved loadouts instead of being locked to one, a welcome quality-of-life change for players who swap roles often.
• Two new secret world seeds, "Electric Boogaloo" and "Calm before the storm", join Skyblock and the other secret seeds from the original 1.4.5 release.

08Balance Changes: What Changed for Each Class

1.4.5 includes an extensive rebalancing pass across melee, ranged, magic and summoner weapons. Because these adjustments touch dozens of individual items and scale differently depending on the stage of progression, don't rely on pre-1.4.5 tier lists or build guides for exact numbers — cross-check current stats in-game or against an up-to-date wiki page for whatever weapon or armor set you're planning around, since specific damage and stat values are the kind of detail hotfixes continue to tweak.

09Should You Update an Existing World?

Yes, safely — updating to 1.4.5 does not wipe or corrupt existing worlds or characters, following Terraria's long-standing track record of backward-compatible updates. New world generation features like the Skyblock seed only apply to newly created worlds; an existing world simply gains access to the new items, crafting UI, and mechanics without any of its terrain being regenerated. If you play with mods (tModLoader), check that your mod list has updated compatibility before updating, since major Terraria updates are historically followed by a mod compatibility lag while authors catch up.