ASEAN Neighbors with Near-Identical Player Profiles
Indonesia and Thailand are Southeast Asia’s two largest gaming markets after Singapore (by per-capita spend). Together they generate over $3 billion in annual mobile gaming revenue. More importantly, their player demographics are almost identical: young (median age under 30 in both countries), mobile-dominant (smartphone ownership exceeds 90 percent of gamers in both markets), price-sensitive but willing to spend on entertainment (IAP rates are lower than Japan or Korea but growing), and heavily influenced by the same regional gaming trends — Mobile Legends, Free Fire, PUBG Mobile, and local genre hits travel across the ASEAN gaming ecosystem with minimal friction.
This demographic alignment makes the Indonesian-Thai language pair one of the most commercially logical localization investments in Southeast Asia. An Indonesian game that works — that has demonstrated retention, monetization, and player satisfaction in its home market — is starting from a strong product position when it targets Thailand. The genre preferences match. The session length preferences match. The visual aesthetic that resonates with Indonesian players tends to resonate with Thai players. The primary work is linguistic and cultural adaptation, not a fundamental redesign of the game experience.
The challenge is that Thai text rendering is technically demanding in ways that are not obvious from the outside. Thai script has properties that require explicit engine support, and projects that underestimate this requirement encounter serious problems at a late stage. Understanding the technical requirement before scoping a Thai localization project is not optional — it is the first thing to get right.
Thai Text Rendering: No Word Spaces, Stacked Vowels, Complex Rules
Thai is written without spaces between words. Where English, Indonesian, and most other scripts use a space character to signal word boundaries, Thai runs characters continuously with no visual gaps. Line breaking in Thai cannot use the space-based algorithm that works for Latin-script languages — it requires a word segmentation algorithm that identifies word boundaries from the character sequence itself, which requires a Thai-specific linguistic library.
Unity provides Thai text support through TextMeshPro with a Thai-compatible font, but line breaking requires additional configuration. Unreal Engine 5 improved Thai support in later versions but earlier Unreal versions had documented Thai rendering issues. Godot 4 handles Thai better than Godot 3. The specific rendering quality depends on both the engine version and the font being used — Noto Sans Thai and Sarabun are commonly used game-safe Thai fonts with broad Unicode coverage and clear rendering at small sizes.
Thai also uses stacked vowel marks — diacritical marks that appear above and below base consonants, sometimes stacking multiple marks in a vertical column above a single consonant. This vertical stacking requires sufficient line height to avoid marks from one line colliding with marks or ascenders from adjacent lines. UI containers sized for Indonesian text — which has no vertical diacritical stacking — may clip Thai text if the line height setting is not adjusted. A Thai localization that looks correct in the editor can have clipped characters in production if the container height was set based on Latin-script text metrics.
The practical recommendation: build a Thai text rendering test suite early in the localization project. Insert the longest and most diacritic-heavy Thai strings into every UI container type and confirm that nothing clips, nothing overflows, and line breaking occurs at word boundaries. Do this before the full translation is complete so that any rendering configuration issues are resolved before they affect the entire translated string set.
Cultural Affinity: Buddhist Influence in Both Markets
Thailand is approximately 95 percent Theravada Buddhist. Indonesia is predominantly Muslim but has significant Buddhist communities, particularly in urban areas and among ethnic Chinese Indonesians, and its cultural history includes centuries of Hindu-Buddhist civilization — the Majapahit Empire and the Borobudur temple complex are central to Indonesian historical identity. This cultural overlap means Indonesian games drawing on pre-Islamic Indonesian history — the court culture of Java, the religious cosmology of Bali, the narrative traditions of the Ramayana and Mahabharata (which are deeply embedded in both Indonesian and Thai cultural life) — have a natural cultural resonance with Thai audiences.
The Ramayana in particular is worth noting. In Indonesia, the Ramayana tradition is expressed through wayang kulit and wayang wong performance, through batik textile motifs, and through literary and artistic heritage. In Thailand, the Ramakien — the Thai adaptation of the Ramayana — is a central text of Thai classical culture, performed in the royal court, depicted in temple murals, and known to most Thai people from school. An Indonesian game drawing on Ramayana characters and story arcs is drawing on a tradition that Thai players will recognize and appreciate, even though the Indonesian and Thai versions of the story have different details and emphases.
This cultural common ground is a localization asset. Where many language pairs require extensive cultural explanation to help target-market players understand source-culture references, Indonesian-Thai pairs around Hindu-Buddhist narrative traditions can often translate with less explanatory scaffolding — the reference is already part of the audience’s cultural vocabulary.
Thailand’s $1.5B+ Mobile Gaming Market
Thailand’s mobile gaming market exceeded $1.5 billion in 2024 and continues to grow at rates that outpace global averages. The market is dominated by mobile platforms, with PC gaming present but secondary. Thai players favor multiplayer titles, battle royale games, and casual games — the same genre profile that Indonesian players favor. The top titles on Thai mobile charts are typically the same titles that lead Indonesian charts: global multiplayer games and a rotating cast of regional hits.
The monetization behavior of Thai players is similar to Indonesian players in structure but higher in average spend. Thailand has higher per-capita income than Indonesia, and Thai mobile gaming revenue per active player is meaningfully higher than the Indonesian equivalent. A game that monetizes primarily through cosmetic items, character skins, and seasonal pass content — the standard mobile monetization layer — will generally see higher IAP conversion rates and higher average transaction values from Thai players than from Indonesian players at similar engagement levels.
For Indonesian studios considering whether to invest in Thai localization, this revenue premium is the primary financial argument. The audience size is smaller — Thailand has 70 million people versus Indonesia’s 270 million — but the revenue per engaged player is significantly higher. Adding Thai localization to a successful Indonesian title is often among the highest-return localization investments available in Southeast Asia.
Cross-Border ASEAN Publishing Strategies
The ASEAN gaming ecosystem is increasingly operating as a unified publishing region rather than a collection of separate national markets. Publishers with operations in Singapore manage distribution across Malaysia, Indonesia, Thailand, the Philippines, and Vietnam from a regional hub. Regional localization packages — a single project covering multiple Southeast Asian languages simultaneously — are economically attractive because they amortize the project management overhead across multiple language pairs.
An Indonesian studio investing in Thai localization should consider whether a broader Southeast Asian package makes sense: adding Vietnamese and Malay (which is closely related to Bahasa Indonesia — more closely related than any other language in the world to Indonesian) to the same project at incremental cost. The shared project management, shared glossary development, shared QA infrastructure, and shared platform submission process make a three-language ASEAN package significantly cheaper per language than three separate single-language projects.
Thai specifically is the language where the rendering complexity adds cost — the word segmentation work and the stacked vowel testing are Thai-specific. But once that infrastructure is in place, subsequent Thai localization projects for the same studio are cheaper because the rendering pipeline is already configured and tested.
Localize Indonesian-Thai with SandVox
SandVox supports the full Indonesian-to-Thai localization workflow: Thai text string management with word-break metadata, stacked vowel height flagging for UI containers, translation memory, glossary enforcement, and multi-format export for iOS and Android platform submission. Whether you are an Indonesian studio targeting Thailand’s premium Southeast Asian market or a Thai publisher expanding into the region’s largest player base, SandVox gives your team the infrastructure to handle Thai’s rendering requirements without building it from scratch. Start your Indonesian-Thai project at SandVox.io.