| Arcade Video game |  Thief | 1981 | Pacific Novelty Mfg., Inc. Marina Del Rey, CA, USA |
| Arcade Video game |  Thief | 1981 | Stella Electronic Spielgerate GmbH Germany |
| Apple II 5.25 disk | Thief | 1981 | Datamost, Inc. |
| Arcade Video game |  Thogs | 1981 | Atari, Inc. CA, USA |
| Apple II 5.25 disk | Threshold | 1981 | On-Line Systems USA |
| Texas instrument TI-99/4A cart. | TI Invaders Model PHM 3053 | 1981 | Texas Instruments |
| Bally Astrocade cass. | Tic-Tac-Dough | 1981 | Super Soft. |
| Tabletop game | Ticker Tape Fever Model 3214 | 1981 | Mattel Electronics Mattel, Inc. |
| Atari 400/800 disk | Tigers in the Snow | 1981 | SSI Strategic Simulations, Inc. 16685 |
| Atari 400/800 disk | Tilt | 1981 | Thorn EMI Video, Ltd. UK |
| Apple II 5.25 disk | Time Lord Model 47-191001D | 1981 | Ramware |
| Pinball | Time Machine | 1981 | LTD Sao Paulo, Brazil |
| Arcade Video game | Time Traveller | 1981 | Atari, Inc. CA, USA |
| Handheld game | Tir aux Corbeaux Model 8101 | 1981 | Bandai Co., Ltd. Japan |
| Commodore VIC-20 cart. | Titan | 1981 | Commodore, Ltd. |
| TRS-80 type-in | Titan | 1981 | SoftSide Publications, Inc. |
| Apple II type-in | Titan | 1981 | SoftSide Publications, Inc. |
| Atari 400/800 type-in | Titan | 1981 | SoftSide Publications, Inc. |
| Arcade Video game | Tomahawk Missile Salon model | 1981 | ESI Electro Sport, Inc. Costa Mesa, CA, USA |
| Arcade Video game | Tomahawk Missile Upright model | 1981 | ESI Electro Sport, Inc. Costa Mesa, CA, USA |
| Texas instrument TI-99/4A cart. | Tombstone City - 21st Century Model PHM 3052 | 1981 | Texas Instruments |
| NEC PC-6001 Series cass. | Tonosama Game Model S-1022 | 1981 | Hudson Soft. Hudson Group Japan |
| Apple II 5.25 disk | Torpedo Fire | 1981 | SSI Strategic Simulations, Inc. 16685 |
| Handheld game | Total Control 4 Model 2125 | 1981 | Coleco Industries, Inc. Amsterdam, NY, USA |
| Handheld game | Touch & Tell | 1981 | Texas Instruments |
| DECO cass. | Tournament Pro Golf Model DT-113 | 1981 | Data East Corp. Japan |
| TRS-80 disk | Tower of Fear | 1981 | Programmer's Guild, The |
| Bally Astrocade type-in | Tower of Hanoi | 1981 | Fabris, Robert San Jose, CA, USA |
| Handheld game | Towering Rescue Model 81555 | 1981 | Gakken Japan |
| Atari 400/800 cass. | Town of Derango | 1981 | Continental Adventures |
| Bally Astrocade cass. | Trap Game + New Trap Game | 1981 | Fabris, Robert San Jose, CA, USA |
| TRS-80 CMD file | Trap ver.2.0 | 1981 | Gray Soft. |
| PTC SOL-20 cass. | Treasure Hunt P | 1981 | JLL |
| Apple II type-in | Treasure Hunt | 1981 | EMAP East Midlands Allied Press |
| Handheld game | Tremblement de Terre | 1981 | Lansay France |
| Atari 400/800 type-in | Trench | 1981 | EMAP East Midlands Allied Press |
| Arcade Video game | Tri-Pool | 1981 | Noma |
| Apple II 5.25 disk | Trick Shot | 1981 | IDSI |
| Slot Machine | Triomint Chance | 1981 | NSM Bingen, Germany |
| Slot Machine | Triomint Record | 1981 | NSM Bingen, Germany |
