Slightly Bad
Price: Free
Ads: No
In App Purchases: Yes

iOS App Store
Google Play App Store

Temporal Dark PatternsTemporal Dark Patterns

This game has 55 reported Temporal Dark Patterns. There are 69 votes indicating the absence of a dark pattern.


17 votes
2 votes
Daily Rewards -
17 / 2 votes
Encourages return visits every day and punishes you for missing a day.

11 votes
6 votes
Infinite Treadmill -
11 / 6 votes
Impossible to win or complete the game.

11 votes
6 votes
Wait To Play -
11 / 6 votes
In-game timers that make you arbitrarily wait for something.

8 votes
8 votes
Grinding -
8 / 8 votes
Being required to perform repetitive and tedious tasks to advance.

8 votes
10 votes
Playing by Appointment -
8 / 10 votes
Being forced to play according to the game's schedule instead of yours.

18 votes
Advertisements -
0 / 18 votes
Forced to watch ads or given rewards for watching ads.

19 votes
Can't Pause or Save -
0 / 19 votes
The game does not allow you to stop playing whenever you want.

Monetary Dark PatternsMonetary Dark Patterns

This game has 105 reported Monetary Dark Patterns. There are 90 votes indicating the absence of a dark pattern.


19 votes
Premium Currency -
19 / 0 votes
Exchange rate between real money and in-game currency disguises the real price of items.

18 votes
1 votes
Artificial Scarcity -
18 / 1 votes
Limited time offers with unnecessary urgency.

18 votes
1 votes
Recurring Fee -
18 / 1 votes
Encourages players to play as much as possible to get their money's worth.

18 votes
1 votes
Gambling / Loot Boxes -
18 / 1 votes
Spending real money to play a game of chance for a reward.

12 votes
4 votes
Pay to Skip -
12 / 4 votes
Spend money to avoid waiting for a timer to expire.

11 votes
8 votes
Pay to Win -
11 / 8 votes
A player can spend real money to purchase something that gives them an advantage in the game.

4 votes
9 votes
Anchoring Tricks -
4 / 9 votes
Placing a cheap item next to an expensive item to make it look more affordable.

4 votes
13 votes
Power Creep -
4 / 13 votes
A permanently purchased item in the game becomes less valuable over time.

1 votes
18 votes
Waste Aversion -
1 / 18 votes
Capped inventory forces you to destroy items or upgrade inventory. Also, having small amounts of left over premium currency.

16 votes
Accidental Purchases -
0 / 16 votes
Making it easy to accidentally spend money with no confirmation or ability to undo or refund the action.

19 votes
Pay Wall -
0 / 19 votes
The game becomes impossible to continue playing without payment.

Social Dark PatternsSocial Dark Patterns

This game has 41 reported Social Dark Patterns. There are 85 votes indicating the absence of a dark pattern.


16 votes
2 votes
Fear of Missing Out -
16 / 2 votes
If you stop playing you'll miss out on something or be left behind and unable to catch up.

16 votes
2 votes
Competition -
16 / 2 votes
The game makes you compete against other players.

4 votes
10 votes
Social Pyramid Scheme -
4 / 10 votes
You get a bonus for inviting your friends and then they have to invite their friends.

3 votes
16 votes
Social Obligation / Guilds -
3 / 16 votes
To avoid letting down your friends, you are obligated to play when you don't want to.

2 votes
17 votes
Reciprocity -
2 / 17 votes
Feeling obligated to return a favor, share resources, trade an item, etc.

19 votes
Friend Spam / Impersonation -
0 / 19 votes
The game sends spam to your contact list or social media account.

19 votes
Encourages Anti-Social Behavior -
0 / 19 votes
The game incentivizes players to lie, cheat, or backstab other players to get ahead.

Psychological Dark PatternsPsychological Dark Patterns

This game has 67 reported Psychological Dark Patterns. There are 52 votes indicating the absence of a dark pattern.


17 votes
2 votes
Badges / Endowed Progress -
17 / 2 votes
Reluctancy to abandon a partially completed goal, even one forced upon the player.

16 votes
3 votes
Invested / Endowed Value -
16 / 3 votes
Having already spent time and money to improve your status in the game, it's difficult to throw it away.

15 votes
3 votes
Variable Rewards -
15 / 3 votes
Unpredictable or random rewards are more addictive than a predictable schedule.

10 votes
6 votes
Aesthetic Manipulations -
10 / 6 votes
Trick questions or toying with emotions or our subconscious desires.

6 votes
10 votes
Complete the Collection -
6 / 10 votes
The urge to collect all the items, achievements or secrets in a game.

1 votes
16 votes
Illusion of Control -
1 / 16 votes
The game cheats or hides information to make you think you're better than you actually are.

2 votes
12 votes
Optimism and Frequency Biases -
2 / 12 votes
Overestimating the frequency of something because we’ve seen it recently or memorably.

App Store Ratings

iOS:  (0.00) with 0 votes.
Google Play:  (4.23) with 7,452 votes.

Recent Dark Pattern Reviews

Fear of Missing Out reported on Sep 11, 2023
Even a short break can cause you to massively lose ranking in events. Longer breaks can cause you to miss out on events and limited events.
Variable Rewards reported on Sep 11, 2023
Live show rewards are always random.
Invested / Endowed Value reported on Sep 11, 2023
Crystals are hard to come by, plus the gacha system creates excitement for cards you get. Getting lots of 4* cards makes you seem better than someone that does not have many.
Artificial Scarcity reported on Sep 11, 2023
Limited event gachas are held once a month, however, they usually are announced in advance (unless you are on JP), and a reprint held later gives you a second opportunity to get a card.
Premium Currency reported on Sep 11, 2023
Absolutely. In fact, spending actual money on currency rewards you with a special "Paid" version of it, that you can spend on exclusive gachas.
Badges / Endowed Progress reported on Sep 11, 2023
Players are rewarded upon getting a "Full Combo" or an "All Perfect" on a song, there are also titles for many accomplishments i.e. "3939" for playing 3939 games.
Wait To Play reported on Sep 11, 2023
Yes and no. Energy is not required to play songs, however, you'll receive significantly less if you play on 0 energy.
Pay to Skip reported on Sep 11, 2023
You can replenish booster energy with crystals. Booster energy is integral to progression due to the increased reward rate.
Daily Rewards reported on Sep 11, 2023
Challenge lives require you to play every day, or you will miss out on the big reward at the end of the week.
Playing by Appointment reported on Sep 11, 2023
Virtual Lives only occur at certain times of the day. You can join whenever you want once the event ends, but you lose out on an extra reward.

Report a Dark Pattern

Screenshot The best Music Game experience at your fingertips with the latest Hatsune Miku adventure!
Tap to the rhythm of popular songs and collect character cards to customise your own band!

Find your true feelings! A mysterious song named “Untitled” with no melody or lyrics is passed around amongst the youth in Shibuya, Tokyo. This song unlocks access to “SEKAI” a strange place that allows everyone to discover their true emotions and their own song.
Play with Hatsune Miku and her Virtual Friends, as well as an original cast of 20 characters overcoming their struggles through the power of music.

• Tap, hold, and flick to the rhythm!
• Discover a rich cast of characters with fully voiced Story Chapters.
• Easy to Master: 5 difficulty levels to choose from.
• Play on your own or create a room with up to 4 friends to share the fun.
• Collect character cards and customize your band and music videos. Level up and upgrade your characters to unlock more skills and reach higher scores.
• Enjoy Virtual Show, a virtual concert in the comfort of your own home, with players from all over the world! Customize your Avatar and Glow Sticks for the show.
• Dress your band members with a wide variety of costumes that you can craft!

ROKI (Lyrics: mikitoP, Music: mikitoP)
Tell Your World (Lyrics: kz, Music: kz)
BRING IT ON (Lyrics: Reol, Music: Giga)
Happy Synthesizer (Lyrics: EasyPop, Music: EasyPop)
Melt (Lyrics: ryo, Music: ryo)
Charles (Lyrics: balloon, Music: balloon)
and much more!

Enjoy online performances in real time of your favorite in-game band with players from all over the world!
Join virtual shows and chat with the community. Interact with the stage by displaying emotes and special effects to make the performamce even more stunning!

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iPhone 7 or above