Is Gacha Go worth the diamonds in Last Z?

Yes, if you use the key accumulation strategy. Spending ~55,000 diamonds yielded 134 Golden Wrenches (~410 diamonds each), which is about 20% cheaper than VIP shop prices (500 diamonds each). The key is to save 300 keys and buy the 70 Golden Wrench bundle for best value.

Can you carry over Gacha Go keys to the next event?

Yes, keys carry over between Gacha Go events. You can accumulate keys over multiple events and spend them when you have enough for the best rewards.

What is the best way to spend keys in Gacha Go?

Save 300 keys to buy 70 Golden Wrenches at once — this is the best value. Avoid spending on smaller bundles (10 keys for 2 wrenches) unless you're close to a milestone.

Gacha Go Event Guide — Golden Wrenches Strategy

Event Guide • Updated January 2026 • 8 min read

What is Gacha Go?

Gacha Go is a recurring diamond-spending event that rewards Golden Wrenches, Modification Blueprints, and gift boxes. Golden Wrenches are essential for vehicle modification and unlocking powerful vehicles like Hercules.

Why Golden Wrenches matter: You need approximately 280 Golden Wrenches to max out vehicle modifications, plus another 300-400 for Hercules. This event is the fastest way to collect them.

How Gacha Go Works

Cost per draw: 500 diamonds for 1 draw, or 5 draws at a time
Rewards: Gift boxes, keys, Golden Wrenches, Modification Blueprints, speedups
Points system: Every draw earns points toward milestone rewards
Storage: Limited space for gift boxes — delete unwanted items to continue
Keys carry over: Unused keys transfer to the next Gacha Go event

Key Exchange Rates

Keys can be exchanged for Golden Wrenches at these rates:

Keys Required	Golden Wrenches	Efficiency
10 keys	2 wrenches	5 keys per wrench (worst)
60 keys	12 wrenches	5 keys per wrench
300 keys	70 wrenches	4.3 keys per wrench (best)

Strategy: Always save for the 300-key bundle. It gives significantly better value than smaller purchases.

Diamond Efficiency Analysis

Real spending data from 55,000 diamonds:

Diamonds spent: 55,000
Golden Wrenches obtained: 134
Cost per wrench: ~410 diamonds
VIP shop price: 500 diamonds (10 wrenches for 3,000)
Savings: ~20% compared to VIP shop

Important: Gacha Go is luck-based. Results vary, but the 300-key strategy consistently provides better value than VIP shop purchases, plus you get bonus rewards from point milestones.

Point Milestones

As you spend diamonds, you earn points toward milestone rewards:

5,000 points: Golden Wrenches + bonus items
8,000 points: 15 Golden Wrenches + Modification Blueprint + Gift Voucher
Higher tiers: Additional Golden Wrenches and rare items

The Gift Voucher from 8,000 points can be used in future events — don't skip this milestone if you're close.

Optimal Strategy

1. Set Your Budget

Decide how many diamonds you'll spend before starting. A good target is 30,000-55,000 diamonds to accumulate enough keys for the 300-key bundle.

2. Focus on Keys

Your primary goal is accumulating keys. Gift boxes and other items are secondary. Delete speedups and unwanted items to make storage space.

3. Save Keys for Bulk Purchase

Don't spend keys on small bundles. Wait until you have 300 keys, then buy the 70 Golden Wrench bundle for maximum efficiency.

4. Skip Animation

Use the skip animation option to speed up draws. Some players report better key drops with animation skipped (unconfirmed).

5. Carry Over If Needed

If you don't reach 300 keys, save them for the next Gacha Go event. Keys don't expire between events.

Storage Management

When storage is full, you have options:

Delete items: Remove speedups and items you don't need
Continue drawing: You'll only receive keys (no boxes) when full
Open boxes: Claim rewards to free up space

Tip: Delete items you can't afford to buy anyway. Focus on accumulating keys first.

Gacha Go vs VIP Shop

Method	Cost per Wrench	Pros	Cons
Gacha Go	~410 diamonds	Cheaper, bonus rewards, bulk wrenches	Luck-based, time-limited event
VIP Shop	300 diamonds	Guaranteed, always available	Limited to 10/month, slow accumulation

Verdict: Use both. Buy VIP shop wrenches monthly, but use Gacha Go for bulk farming when you need to progress quickly.

Why Rush Golden Wrenches?

Vehicle modification requires massive amounts of Golden Wrenches:

8 modification levels: ~280 Golden Wrenches total
Hercules unlock: Additional 300-400 wrenches
VIP shop pace: Only 10 wrenches/month = 2+ years to complete

If you want Hercules in a reasonable timeframe, Gacha Go is essential. Waiting for VIP shop alone would take too long.

FAQ

Is there a daily limit on keys from Gacha Go?

There may be soft limits on certain rewards per day, but keys can generally be accumulated continuously. The exact mechanics aren't fully documented.

Should I buy the 60-key bundle or save for 300?

Always save for 300 if possible. The efficiency difference (4.3 vs 5 keys per wrench) adds up significantly over time.

What about Modification Blueprints?

Blueprints are a bonus, not the main goal. Focus on Golden Wrenches first — you'll get enough blueprints naturally from the event.

When does Gacha Go appear?

Gacha Go is a recurring event. Watch for it in the events tab and plan your diamond spending accordingly.

Sources

Based on: Gacha Go Golden Wrench Guide and other sources