|CBS Big Brother: Season 1|
|Season Run||February 22th - March 3, 2018|
|Prize Money||2000 Robux|
|Returnees|| IxDespair (BBAS)|
KreamKyle (BB4, BBAS)
|Next Season||CBS Big Brother: Season 2|
Big Brother 1 (CBS) is the 1st season of the ROBLOX edition of CBS Big Brother and the 1st season overall.
Big Brother 1 (CBS) was confirmed on January 21, 2018 when the host of the Season officially released applications, and the Season's teaser. Later on that day, it was also confirmed that mryoda66 and Sonofhermes11 would be apart of Production.
Casting opened on January 21, 2018, the same day the Season was confirmed. Then six days later, the cast was revealed live in the Official Discord chat.
- Battle for the Crown: Each week, not only will a Head of Household be crowned, but the 2nd placer will become the crown holder. The crown holder is guaranteed a spot in the Power of Veto. If the crown holder wins the POV, they will dethrone the current HOH. The Crown Holder is then the new HOH, and can name a replacement nominee afterwards, that cannot be the dethroned HOH.
- Jury Comebacks: On week 9, JodyGraf, Emeraldiya, jojotwinore and maryacal all joined the houseguests in the HOH competition, for a shot at coming back into the house.
- Have/Have Nots: On week 1, 3 and 4, three or four houseguests were named the have-nots for the week, meaning they would have to be locked in their room all the time, except for ceremonies and competitions.
- On Week 4, the have-nots were decided through the Endurance HOH Competition, "Frozen Power".
- Instant Eviction: On week 9, the Houseguests were surprised with an Instant Eviction, which meant that no one got a chance at winning the Veto, and that the initial nominees would be final, and the houseguests would vote to evict right away.
|Week 1||Week 2||Week 3||Week 4||Week 5||Week 6||Week 7||Week 8||Week 9||Week 10||Week 11||Week 12||Week 13|
|Day 33||Day 35||Day 75||Day 77||Day 99||Finale|
|Despair|| Vetoed||Vetoed||Vetoed||Rep|| Vetoed||Winner|