(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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Excessive amount of System.Debug()
SOQL without WHERE or LIMIT outside Batch
No flags to deactivate trigger declaratively
Multiple triggers on one sObject
Code in trigger instead of Trigger Handler
No assertions in Tests
No Test data factory/builder
Hard-coding UI text instead of Custom Labels
Calling Queueable in loop without control mechanism or logging
Nondescriptive variable names in Flow
Excessive lack of .startTest() and .stopTest()
Exactly 75% test coverage
Unjustified big number of Record Flows on one sObject
SOQLs in loop
Method with 100s 'i++' lines for fake code coverage
No Fault Paths in Flows
Public Read/Write OWDs
Hard-coded ID
No checking collection emptiness before DML
DMLs in loop
Getting IDs by loop instead of Map(records)
Only catching general catch(Exception)
Gigantic Flow instead of multiple Subflows
Hard-coded authentication instead of using Named Credentail
