(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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No assertions in Tests
Method with 100s 'i++' lines for fake code coverage
SOQLs in loop
Unjustified big number of Record Flows on one sObject
Only catching general catch(Exception)
Hard-coding UI text instead of Custom Labels
No Fault Paths in Flows
Hard-coded ID
Getting IDs by loop instead of Map(records)
DMLs in loop
Public Read/Write OWDs
Code in trigger instead of Trigger Handler
SOQL without WHERE or LIMIT outside Batch
Excessive lack of .startTest() and .stopTest()
Excessive amount of System.Debug()
Gigantic Flow instead of multiple Subflows
Exactly 75% test coverage
Multiple triggers on one sObject
No flags to deactivate trigger declaratively
No checking collection emptiness before DML
Nondescriptive variable names in Flow
No Test data factory/builder
Hard-coded authentication instead of using Named Credentail
Calling Queueable in loop without control mechanism or logging
