Projects, development updates, articles, and retrospectives from Left Jun.https://leftjun.com/enhttps://leftjun.com/en/projects/ai-game-project-management/https://leftjun.com/en/projects/ai-game-project-management/An individual study covering a new PM's first 48 hours, conflict decisions, launch review, and a three-month roadmap, developed from personal working notes.Fri, 31 Jul 2026 02:00:00 GMTAI × PM48h Handover SOPChange ReviewRoadmaphttps://leftjun.com/en/projects/ai-game-creation-research/https://leftjun.com/en/projects/ai-game-creation-research/Coordinated a 14-person study team that delivered an H5 product and backend, survey and interview work, a report, and the final presentation.Fri, 31 Jul 2026 01:00:00 GMT14-person CoordinationH5 ProductUser ResearchLead Report Writerhttps://leftjun.com/en/updates/portfolio-refresh/https://leftjun.com/en/updates/portfolio-refresh/A foundation refresh covering mobile navigation, a bilingual update timeline, data-driven selections, responsive media, search performance, and structured SEO.Mon, 13 Jul 2026 09:30:00 GMTSite UpdateAstroResponsive Designhttps://leftjun.com/en/projects/action-game-ip-design/https://leftjun.com/en/projects/action-game-ip-design/A study of IP gameplay translation, version ecosystems, and long-term operation through attack-defense exchange in action games.Fri, 26 Jun 2026 02:00:00 GMTCombat DesignIP CharacterVersion BalanceLive Operationhttps://leftjun.com/en/projects/limen-notes/https://leftjun.com/en/projects/limen-notes/A personal web product in progress for journals, essays, and personal expression, using warm paper-like visuals, generous spacing, and low-interruption interaction for writing and reading.Sun, 21 Jun 2026 13:30:00 GMTWeb DevelopmentNext.jsSupabasePWAResponsive DesignUI / UXWritinghttps://leftjun.com/en/projects/ue5-coop-training-range/https://leftjun.com/en/projects/ue5-coop-training-range/My first Unreal Engine 5 multiplayer PVE demo: a Blueprint and Replication based local Listen Server build with server-authoritative shooting, enemy AI, respawn, team scoring, and win-state sync.Sun, 21 Jun 2026 12:00:00 GMTUnreal Engine 5BlueprintMultiplayerReplicationGameplay NetworkingUMGhttps://leftjun.com/en/retrospectives/ashe-lament-retrospective/https://leftjun.com/en/retrospectives/ashe-lament-retrospective/A retrospective on Elegy of Asherah, a 72-hour Limenauts team project, covering system design, production coordination, resource-management gameplay, and offline playtest feedback.Thu, 21 May 2026 03:00:00 GMTProject RetrospectiveElegy of AsherahTeam ProjectResource ManagementPlatformerhttps://leftjun.com/en/retrospectives/emotion-mask-retrospective/https://leftjun.com/en/retrospectives/emotion-mask-retrospective/A retrospective on Emotion Mask, from a Global Game Jam prototype to an offline roadshow demo, covering development choices, mechanic tradeoffs, and follow-up direction.Thu, 21 May 2026 02:30:00 GMTProject RetrospectiveEmotion MaskGame JamSolo DevelopmentPlatformerhttps://leftjun.com/en/retrospectives/time-echo-retrospective/https://leftjun.com/en/retrospectives/time-echo-retrospective/A retrospective on Echoes of Time, covering the Sanjiao Cup Game Jam plan, three-era level structure, narrative writing, and team collaboration.Thu, 21 May 2026 02:00:00 GMTProject RetrospectiveEchoes of TimeGame JamTeam ProjectPlatformerhttps://leftjun.com/en/plans/emotion-mask-roadmap/https://leftjun.com/en/plans/emotion-mask-roadmap/A follow-up update plan for Emotion Mask based on feedback from the May 16 Shuguang Youji offline playtest.Wed, 20 May 2026 06:00:00 GMTDevelopment PlanEmotion MaskShuguang YoujiPlatformerhttps://leftjun.com/en/plans/ashe-lament-roadmap/https://leftjun.com/en/plans/ashe-lament-roadmap/A follow-up plan for Elegy of Asherah based on feedback from the May 16 Shuguang Youji offline playtest, focused on onboarding and system feedback.Wed, 20 May 2026 05:30:00 GMTDevelopment PlanElegy of AsherahShuguang YoujiResource Managementhttps://leftjun.com/en/posts/shuguang-youji-roadshow/https://leftjun.com/en/posts/shuguang-youji-roadshow/Notes from showing Emotion Mask and Elegy of Asherah at the first Chengdu Shuguang Youji offline game exhibition, plus follow-up directions from nearly one hundred playtests.Wed, 20 May 2026 02:00:00 GMTProject RetrospectiveEvent RecordShuguang YoujiOffline RoadshowEmotion MaskElegy of AsherahIndependent Gameshttps://leftjun.com/en/posts/welcome/https://leftjun.com/en/posts/welcome/A short note explaining how projects, retrospectives, development plans, and articles & columns connect in this portfolio.Wed, 22 Apr 2026 02:00:00 GMTNotesAstroSite Buildinghttps://leftjun.com/en/projects/smart-boat/https://leftjun.com/en/projects/smart-boat/My solo entry for the Sichuan University Water Star Model Boat Competition (Spring 2026): I completed the controller, onboard receiver, PCB, fabrication, and full-system integration, then placed 9th among 72 professional-division teams.Sat, 28 Mar 2026 02:00:00 GMTSTM32EmbeddedHardwarehttps://leftjun.com/en/projects/ashe-lament/https://leftjun.com/en/projects/ashe-lament/A 72-hour Tencent University Game Extreme Development Competition team project: a 2D platformer and resource-management game built around spirit energy, underground safe time, shortcut construction, and multi-ending settlement.Fri, 20 Mar 2026 02:00:00 GMTUnityPlatformerTeam ProjectC#https://leftjun.com/en/projects/relativity-of-a-dot/https://leftjun.com/en/projects/relativity-of-a-dot/A 6-hour 2D / 3D switching puzzle prototype using DimensionManager, Cinemachine, movement-axis switching, and collider switching to test spatial-rule changes.Tue, 10 Feb 2026 02:00:00 GMTUnityC#PrototypePuzzlehttps://leftjun.com/en/projects/emotion-mask/https://leftjun.com/en/projects/emotion-mask/A 2D emotion-driven platformer-puzzle game growing from a solo 48-hour Global Game Jam prototype toward Steam release and market validation.Sun, 25 Jan 2026 02:00:00 GMTUnityC#Game JamPhotoshophttps://leftjun.com/en/projects/time-echo/https://leftjun.com/en/projects/time-echo/An early Limenauts team project: a 2D narrative puzzle-platformer built around ancient, modern, and future timelines, timeline switching, instrument collection, and music-driven level progression.Thu, 20 Nov 2025 02:00:00 GMTNarrativePuzzleGodot