Mystery Crank is a new premium-oriented way of obtaining Units and Items introduced in Metal Slug Attack, even though MSP and free options are available. Its use is walked through during the tutorial at the beginning of the game. Each type of cranks can be spun either 1 or 10 times (with a discount) at a time.
"By consuming MSP, any items are to come..." ~in-game description
As the name implies, this crank takes in exclusively MSP payments:
This crank offers scheduled free spins (x1) in regular intervals throughout the day:
- 0700 - 0900 hours.
- 1200 - 1400 hours.
- 1500 - 1700 hours.
- 1800 - 2000 hours.
- 2200 - 0000 hours.
Occasionally, SNK will have a Super Rare unit selected as the "Pick Up!!!" of the crank.
When this happens, that unit has a greatly increased chance of being the player's reward from their crank(s).
Standard Medal Crank
As the name implies, this crank takes in exclusively Medal payments (Number of free spin restarts at 4 AM [as of 1.17.0]:
(guarantees a Super Rare [as of 1.4.0] unit or 80 parts of an obtained Super Rare unit.)
This crank is unlocked upon reaching VIP Level 11 (20,000 VIP EXP) and offers 1 free spin every 24 hours [as of 1.3.0] after reaching VIP Level 14 (80,000 VIP EXP). Prices are identical to the Medal Crank, however drops are much better.
(guarantees a Super Rare (or 80 parts of an obtained Super Rare) [as of 1.4.0] unit and a Platinum item [as of 1.4.0])
Introduced in 1.3.0, this limited-time crank drops units exclusively and at a cheaper price than the Medal Crank, however units of all rarities are available - even those available in the MSP Crank. Performing 10 spins guarantees at least 30 parts of 2 Super-Rare units.
(guarantees a unit)
Triple Event Crank
With the release of the 2.0.0 update, the Event Crank now has three "Pickups". In addition, the Event Crank only offers units from one faction depending on the units being showcased at the time:
- Regular Army Crank:
- Special Nadia
- "Cat Ears" Leona
- Rebel Army Crank:
- Allen O'Neil (Wrath)
- Ptolemaic Army Crank:
- Alien Army Crank:
Introduced in 2.0.0, the Box Crank is a new crank added to the game. Different from other cranks is that the award list has 500 rewards, ranging from Super Rare unit parts to Silver Tier items, all with the same probabilities. As a reward has been collected, it is then taken off the list and thus wont show up again. Players are able to reset their box crank back to 500, allowing them to gain more units and items from the crank. In rare occasions, a Gold Genie may appear. This means that all ten rewards will be unit parts. This crank can also guarantee Extra Ops units.
For every 100 spins, a special avatar is rewarded to the player.
- As of 1.16.1, all of the "Rare" units in both Medal and VIP crank were removed, and were replaced with the pack shop units.
|Metal Slug Attack|
|Game Modes||Another Story | Attack! • List of Standard Missions • List of Elite Missions | Battle and Team Battle | Combat School | Extra Ops • List of Extra Ops Stages | Online | P.O.W. Rescue | Special Ops|
|Features||Level and EXP • VIP | Build Up • Units • by Icon • Teams • Stats • Items | Guild • List of Guild Raid Stages | Daily Login • Daily Quests • Events | Power-Ups | Mystery Crank • Treasure Hunt | Shops|