Fluffy Backpack: Merge Defense

We opened Fluffy Backpack: Merge Defense with very low expectations, a light merge game to kill time, and for the first ten minutes it really was that pleasant. The tutorial hands you three weapons and tells you to drag them into the backpack grid, and your attack stat jumps from 0 to 449 after just three drags.

Then the game invites you to tap the refresh button on the gear belt to swap in a new batch, and that's when everything stalls. You enter a battle with exactly 15 silver coins, and one refresh costs exactly 15 silver coins, so after a single tap your wallet is at 0 and the button turns red. The only thing still lit at the bottom of the screen is a green button with a video play triangle, offering 30 coins with three uses left.

Pack your backpack, then sit back while it fights for you

A chapter is split into 15 waves of monsters, and between waves the game pauses and opens the backpack for you to arrange. The grid is 6 columns by 7 rows, but at the start only 12 slots are lit; the rest are dark and have to be opened gradually with coins or by watching a video.

Gear drops onto a conveyor belt at the bottom of the screen, and each item has its own shape. A bow fits neatly into two vertical slots, a dart takes just one, and a staff stretches across three. You drag them onto the grid so they fit, and if you drop two identical items on top of each other, they merge into a higher-tier one.

Press the battle button and your part is done. Monsters march in a line from the top of the screen and stop at a spiked fence with 1000 HP, while all the gear in your backpack fires on its own, each item at its own rhythm. You watch, read the damage numbers popping over the monsters' heads and wait for the next round of arranging.

Every few waves the game slips in a panel of three cards so you can pick one stacking perk for the whole battle, ranked in four colors: green, blue, purple and gold. This part is pure roguelite and the most enjoyable bit of the game, but it's also where the second watch-a-video button is planted.

Outside battle: a long road and a 25-point meat bar

Outside battle there's a map shaped like a road running up the screen. Each chapter is a bubble, and you climb up from Chapter 1. Each chapter awards three stars at three milestones, passing wave 5, passing wave 15 and clearing it, and you need enough stars before the next chapter will open.

At the bottom are five tabs, Shop, Heroes, Battle, Artifacts and Castle, but when you start, four of the five are padlocked. We only unlocked Heroes and Artifacts after clearing Chapter 1, and even at Chapter 3 the Shop and Castle were still nowhere to be seen.

Heroes is where you equip your character and socket gems into the slots on their gear. Artifacts is where you upgrade the weapons that will show up in your backpack during fights. Two currencies run side by side here: gold for most upgrades, diamonds for the pricier things.

And in the top corner sits the most important bar of all: a piece of meat with the number 25 of 25. Every chapter run costs exactly 5 points, which means you get five runs, and each point takes a full 10 minutes to come back.

And this is where the game starts holding out its hand

Simple division shows the problem right away. Those five runs are gone in about an hour if you play straight through, while refilling the meat bar takes over four hours of waiting.

In battle, every door leads to the same button. Want more coins to refresh the gear belt? Watch a video, three times at most. Want more backpack slots? Watch a video. Want to take all three perk cards instead of one? Another video, again three times. Some batches have that triangle button on all four items, meaning every single one of them costs you an ad.

After a battle, the victory screen pours out 200 gold and a handful of shards, and right next to the normal claim button is a double-claim button with a video attached. As soon as we cleared the first chapter, the game opened a window selling the Starter Hero Pack, $3.99 for a UR-grade hero.

On the left edge of the map there's even a permanent column of shop buttons. The 24-hour ad removal pack costs $1.99, so you buy one quiet day and then buy another the next. The permanent version is $7.99, and the $11.99 one adds double battle speed and 500 diamonds; in other words, even the fast-forward button in battle is something for sale.

The mod removes exactly those buttons

Our Fluffy Backpack mod adds a red floating MOD button in the left corner of the screen; tap it for a panel of switches. Every switch starts off. Ad removal is a VIP 1 option like most of the others, so turn it on in the MOD menu, along with whichever of the rest you want.

We tried the take-all button on the perk panel and all three cards went straight into the bag without a single video playing. Tapping the double-claim button at the end of a chapter took the reward from 300 to 600 gold and the shards from 7 to 18, again with no ad in sight. Both still worked exactly the same with the phone's network switched off completely.

The option most worth paying for is the paid-pack one. Turn it on and tap buy on that very $3.99 pack. The game opens no payment window and hands over the UR hero Merlox plus ten silver keys, and the first day's gift milestone is marked as claimed.

On the money side, we set gold to one million and diamonds to nearly five million, and the numbers showed up in the top bar almost instantly. More importantly, they can really be spent. Upgrading the hero's gear cost 100 gold and upgrading the Firebird artifact cost 400, and both times the balance returned to the set amount within about half a second.

The remaining switches aim straight at the bottlenecks described above. Starting coins per battle lets you begin with 500 coins instead of 15, and Unlock all backpack slots lights up all 42 slots from wave one. Gear tier on pickup forces every item that appears to tier 4. And Invincible wall does what the name says: we played two whole chapters against more than 600 monsters and the fence's HP bar never moved from 1000.

Two options that gave us trouble, and where they stand now

In our first round of tests, Unlock all 9 gear slots didn't work. We turned it on, restarted the game and went to the artifact-fitting screen, and the last three slots were still locked, with text telling us to clear chapters 6, 10 and 13. A second try was the same, so it was a real bug. We re-tested on Sep 3 with the newer mod version and it now works: all nine slots were open and fitted with artifacts with only chapter 1 cleared. If you still see padlocks, restart the game once.

The network block option was a much bigger problem. This game refuses to start until it has reached its server, so with that switch on, the loading screen stopped at an error dialog and you couldn't get in even with a signal. Turning it off fixed the next launch as if nothing had happened. Since the flaw is in the game itself and can't be patched, we removed that switch from the mod on Sep 3, 2026, so you won't see it any more.

There's one more limit to know about so your expectations are right. Gold and diamonds don't buy everything: gear upgrades also need scrolls and artifact upgrades need shards, and both only drop from battles. We had a million gold in hand and still got stuck at 65 of 150 shards, so the game still makes you play.

Easy on the eyes, light on things to do

Under Settings there's a language button with a long list to pick from, and switching takes effect immediately, without a restart.

The visuals are pleasant: hand-drawn cartoon art with round, chubby monsters and fairly smooth merge effects. The biggest weakness isn't the graphics but the fact that battles give you nothing to do except watch. Take away the backpack-arranging moments and what's left is rather monotonous.

So who should play it

Do you like shape-based inventory packing like Backpack Battles, but want something lighter you can open while waiting for someone? Fluffy Backpack is a sensible choice. On Google Play it has 4.5 stars from more than 4,200 ratings and over 100,000 downloads; not huge numbers, but enough to say it isn't some unknown.

And if you downloaded it before and quit halfway, chances are the reason wasn't the gameplay. Most people who bother to write a review stop at the ads, and having really played it, we think they're right. The mod here removes almost all of those annoying buttons, and with no need to pay $1.99 a day for one quiet evening, the game feels completely different.