Gameplay and design
Mahjong Tensei is a four-player Japanese mahjong game in which players compete at the same table against computer-controlled opponents, following the full rules of Japanese mahjong rather than a tile-matching puzzle format. The official browser page offers free match play and includes a promotion system of ranks and levels, so players gradually raise their rating through repeated matches. Here "free" refers to the match play open on the official page; it does not mean the game belongs to the broad category of "free mahjong games."
Beyond standard free matches, the game also includes tournaments and a "sanma" style of play. Sanma is the three-player form common in Japanese mahjong, which differs from four-player mahjong in tile count and some rule details. Free matches suit everyday practice and casual play, while tournaments and sanma offer different pacing and challenges, letting players enter whichever mode they prefer.
The computer opponents come in multiple strength levels, so players can pick a difficulty that fits their skill. The game also offers rule settings that let players adjust certain match conditions, such as toggling particular rule details, bringing the match closer to the Japanese mahjong rules they are used to. The source does not list every adjustable condition, so all that can be confirmed here is that rule settings exist; the specific options are not detailed in the available records.
Background and release
Mahjong Tensei was developed and published by the Japanese company e-folder as a browser mahjong game aimed at the Japanese market. Its title, "Mahjong Tensei," uses the Japanese word for mahjong. The game was first announced in 2015, appearing as a browser version that players could enjoy on a web page without installing a client. The source confirms only that it was announced in 2015 and does not give a specific launch date for the browser version, so no more precise timing should be added.
In November 2015, e-folder released a smartphone app version of the game. The app release further confirms e-folder's role as developer, but the app was not the game's first appearance; the browser version was its original form. The two versions came out close together and together make up the game's release history that year; the phone app is an extension of the same game onto another platform, not its starting point.
In early catalog entries, the game was briefly described as a "free mahjong game" and lacked developer and year information. Such vague records can easily obscure its specific identity. In fact, it is a four-player Japanese mahjong title with a clear publisher and title, not a generic collection of free mahjong games. When introducing the game, then, one should use the title "Mahjong Tensei" directly and note e-folder as developer and publisher.
Development
Mahjong Tensei's browser version was announced in 2015, which means it was aimed at the web platform from the start of its design. Unlike disc-based software or clients that must be installed, a browser game lets players start a match just by opening a web page, lowering the barrier to trying it. From the confirmed information, the official browser page offers free match play along with a rank and level progression system, and players can take on computer opponents in four-player Japanese mahjong directly in the browser. This form gave the game the character of an ongoing online service from the beginning, rather than a one-time purchase installed and then played offline.
In November of the same year, e-folder brought the game to the smartphone app market. The move from browser to phone app shows that the game's service was not limited to computer web pages. The phone version let players continue matches on mobile devices, but the source does not detail the specific differences in content or features between the two versions. What can be confirmed is that the app release further established e-folder as the developer; it was not the game's first appearance, however, since the browser version was the original form.
It is worth distinguishing this game's browser origins from arcade ports that merely run in a web page. Its original platform is the browser, and the web page is not a later way of running it, so the browser should be seen as part of its identity rather than a mere delivery method. This also reminds us not to overlook its specific identity just because old catalog entries described it vaguely as a "free mahjong game" and even omitted the developer and year. As for the exact launch date of the browser version in 2015, the available material does not provide one, so none is added here.
Reception and legacy
Material on Mahjong Tensei is relatively limited, and there are currently no public records of sales, review scores, or awards. From what is known, it is a browser Japanese mahjong game that appeared in 2015 and later received a phone app. Precisely because such external data is lacking, it is better to focus on the match content and release form it actually offers rather than speculate about how popular it was at the time. What can be confirmed is that e-folder developed and published it and that its title is "Mahjong Tensei," which is enough to distinguish it from the vaguely labeled entries in catalogs.
One of the game's points of value is that it preserves an early form of browser mahjong. Unlike later games that rely entirely on clients, it let players experience full four-player Japanese mahjong through a web page, complete with a rank system and multiple match modes. The official browser page offers free play and includes a rank and level progression system; tournaments and a "sanma" style of play are among the recorded modes, and computer opponents come in multiple strength levels. For anyone studying the development of browser mahjong in Japan, it is a concrete example: it shows that around 2015, four-player Japanese mahjong could exist as an ongoing web service.
Because of the limited material, no further judgment can be made about its influence or player reception. What can be confirmed is that it is not a mahjong tile-matching game but four-player Japanese mahjong, and this should be made clear when discussing its genre. Its title, "Mahjong Tensei," also reminds us not to lump it simply into the vague category of "free mahjong games." Early catalog entries omitted both the developer and the year, leaving only a description like "free mahjong game," and that way of recording things tends to erase the game's specific identity. Only by restoring the title, the company, and the 2015 date can its place in e-folder's lineup be seen clearly.
