Something big is about to rise in RollerCoin.
On September 16, the gates open to Grand Building, a new server-wide event where Rollers join forces to build something that won’t simply disappear once the event is over.
The idea is simple:
- use eligible items to support the construction;
- earn Grand Building Points (GBPoints);
- and turn those contributions into real construction progress.
And the first blueprint on the table is the Hamsters GYM.
But Grand Building has more going on beneath the surface. Your GBPoints can push the building forward, move you up a Stage Leaderboard, and progress your BuildPass. Knowing what the current Recipe still needs can completely change your strategy.
So, helmets on. Let’s see how this construction site actually works.
What is the RollerCoin Grand Building?
Grand Building is one massive construction project shared by Rollers on the same server.
The event is divided into four consecutive Stages, and every Stage represents another part of the build. The server starts with an unfinished construction site and gradually transforms it as more resources are contributed and more GBPoints are added to the project.
Think of it as a mix of cooperation and competition.
Everyone is working toward the same building, but your individual contribution still matters.
GBPoints determine your progress in the BuildPass and your position on the current Stage Leaderboard.
Remember: BuildPass rewards will be granted once the entire Grand Building construction is completed. You don’t need to complete every BuildPass level, you’ll receive the rewards unlocked through your current progress.
And every Stage is a fresh chapter.
Once one construction phase reaches 100%, its Leaderboard closes, its rewards are settled, and the next Stage begins with a brand-new Leaderboard. The BuildPass, however, continues across all four Stages.
Your first mission in Grand Building is to build the Hamsters GYM, another feature coming soon to RollerCoin, but this time, Rollers are part of what brings it to life.
Every contribution pushes the construction forward, turning an empty site into the next addition to the Rollerverse. The GYM is coming, but first, it has to be built.
Contribute with items, earn GBPoints, build the next Stage
The Recipe shows the types of items currently needed for construction. Depending on the Stage, different eligible categories can appear, including things such as Miners, Racks, Hamsters, or special event resources.
From the contribution panel, you choose what you want to use and can see how many GBPoints those items will generate before confirming.
Then comes the important part: when you press Build, those selected items are consumed.
Once contributed, an item is permanently removed from your inventory and converted into GBPoints according to its value in the current Recipe.
Different items can also be worth different amounts of GBPoints, so this isn’t simply about throwing anything you have into the construction site. Check what the Recipe needs, check what your items are worth, and decide what makes sense for your goal.
Maybe you want to help finish the Stage. Perhaps you’re fighting for a Leaderboard position. Or maybe that BuildPass is your real target.
And that becomes especially important as individual Recipe categories start filling up.
Each Recipe category has its own limit
This is one rule you really want to understand before making a contribution.
Each eligible category in the current Stage Recipe has its own server-wide contribution limit. If the required amount for a category has already been reached, Miners, for example, you can no longer contribute more items from that category during the current Stage.
There is no overcap. Once a category is full, contributions from that category are closed.
Other Recipe categories may still need resources, so always check what the construction site needs before choosing your items.
As long as your contribution is accepted, the GBPoints you earn count toward:
Grand Building Progress + Stage Leaderboard + BuildPass
| Recipe category status | Can you contribute? | Earn GBPoints? |
| Category still needs items | Yes | Yes |
| Category limit reached | No | No |
Category full? Check what else the Recipe still needs and keep building from there.
Four Stages, one construction
Grand Building isn’t completed in one giant push.
The Hamsters GYM is built across Stage 1, Stage 2, Stage 3, and Stage 4, with every step taking the construction closer to its final form.
The progress of the active Stage is shown as a percentage below the Stage icon. That percentage represents how close the server is to completing the current construction phase.
When it reaches 100%, the Stage is done. For the first Stage, Rollers will collectively need: 150 000 000 GBPoints
That number isn’t currently displayed directly in the event interface, so we’re including it here to make the first construction target clear.
As the percentage rises, the building itself evolves too.
The project begins as a construction site and gradually receives more of its structure, machinery and final details as the community moves through the Stages. By the time Stage 4 is complete, what started as a blueprint becomes the finished Hamsters GYM.
The basic journey is:
Base → Stage 1 → Stage 2 → Stage 3 → Stage 4 → Finished
Once a Stage is completed, there’s no going back to its progress. The construction moves on, a new Stage opens, and the next part of the job begins.
Every Stage is a new Leaderboard race
Grand Building may be cooperative, but nobody said the construction crew couldn’t compete.
Each of the four Stages has its own separate Leaderboard.
Your ranking is based on the GBPoints that successfully count toward the current Stage Leaderboard. The more GBPoints you earn from available Recipe categories while that Stage is active, the higher you can climb.
When the Stage reaches 100% completion, the race ends.
The Leaderboard is finalized and the corresponding Stage rewards are credited based on the final standings. Then the next Stage opens with a new Leaderboard and a new opportunity to compete.
So your position does not simply carry through all four construction phases.
A great Stage 1 gives you the rewards and bragging rights for Stage 1, but when Stage 2 begins, the race starts again.
This is also why keeping an eye on the Stage Recipe matters.
Once a category reaches its limit, you can no longer contribute items from that category or earn additional GBPoints from it during the current Stage.
If you’re fighting for a Leaderboard position, check which Recipe categories are still open and put your resources where the construction still needs them.
The BuildPass is one long run
While the Leaderboard resets every Stage, the BuildPass does not.
There is one Grand Building BuildPass running across all four Stages, so the GBPoints you earn throughout the entire event keep pushing its progression forward.
The BuildPass includes Free and Premium tracks, with the Premium track covering the whole Grand Building event rather than an individual Stage.
The GBPoints you earn from accepted Grand Building contributions also move your BuildPass forward.
That makes checking the current Recipe especially important. Once one contribution category reaches its limit, you’ll need to look at the categories that are still available if you want to keep earning GBPoints.
BuildPass rewards are unlocked when construction is complete. The rewards become available once all four Stages are completed and the Grand Building is fully constructed.
You do not need to complete the entire BuildPass to receive rewards. Even if you finish only part of it, you will receive all rewards unlocked through the levels you reached.
For example, if the BuildPass has 40 levels and you reach level 39, you will receive the rewards for those 39 completed levels once construction is finished.
Complete the construction to unlock BuildPass rewards
Grand Building’s BuildPass does not pay out rewards level by level as you progress.
BuildPass rewards become available once all four Stages are completed and the Grand Building is fully constructed.
You do not need to complete the entire BuildPass to receive rewards. You will receive all rewards unlocked through the levels you reached.
For example, if the BuildPass has 40 levels and you reach level 39, you will receive the rewards for those 39 completed levels once construction is finished.
So keep earning GBPoints to unlock as many BuildPass rewards as possible before the Grand Building construction is complete.
Finished the BuildPass? Don’t forget to claim
Completing the final level is also not the last action.
BuildPass rewards must be claimed manually.
They are not automatically sent to your account just because you completed the Pass.
Finish the whole thing, then make sure you actually collect what you earned.
It’s a small action, but probably not one you’ll want to remember five minutes after the event has already ended.
Meet the Lunch Box
A construction crew needs fuel, apparently.
Grand Building introduces the Lunch Box, a special event resource that can appear as one of the items required by a Stage Recipe.
Lunch Boxes are made specifically for Grand Building Recipes. They are stored among your Utility Items and can be obtained through different activities running around the event, such as Forge, Puzzle Events, Progression, Burning, Resource Well, offers, and other event sources.
Their purpose is simple: when a Stage Recipe asks for Lunch Boxes, you can contribute them to the Grand Building just like any other eligible resource. They have no separate use outside the Grand Building Recipe.
When the event ends, any unused Lunch Boxes expire and are removed from your inventory.
So if you’ve been stockpiling enough lunches to feed an army of Hamsters, make sure that army actually eats before construction closes.
Watch the Hamsters GYM come alive
Grand Building starts with an empty construction site. What happens next depends on you.
On September 16, the first contributions hit the construction site, Leaderboards open, GBPoints start climbing, and the first pieces of the Hamsters GYM finally begin to take shape.
Four Stages later, that empty site should look very different.
One server. One massive build. Plenty of Hamsters pretending they know how construction works.
See you at the site.
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