| Hallford et al. (2001) | Video game rewards | Four types of game rewards focused on role-playing video games: rewards of glory, sustenance, facility and access |
| Salen and Zimmerman (2004) | Video game rewards | Expanded utilization of rewards beyond role playing games building on Hallford et al. (2001) |
| Rigby (2009) | Video game rewards | Four-way classification of Hallford et al.’s (2001) taxonomy based on reward contingency |
| Wang and Sun (2011) | Video game rewards | Video game rewards classified by instance: scoring, item granting and achievement systems, experience points, resources, feedback, plot animations and unlocks |
| Phillips et al. (2013) | Video game rewards | Added positive and sensory feedback to the original Hallford et al. (2001) taxonomy to enhance its use, appeal and applicability |
| Robinson and Bellotti (2013) | Gamification elements | Broad framing of gamification elements based on incentives |
| Rapp (2017) | Gamification rewards | Classification of rewards used in gamification based on reward systems used in the game world of warcraft |
| Schöbel et al. (2020) | Gamification elements | Classification of game elements that also feature as rewards using game design and game logic parameters |
| The current research | Gamification rewards | The proposed tangible, verbal, symbolic scheme (TVSS) is a novel taxonomy for gamification rewards |